• Post category:Upper Receivers
  • Post last modified:October 22, 2022
  • Reading time:33 mins read

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Looking for the best 300 Blackout upper? Check out the list of the top-rated options on the market today. With so many different products to choose from, it can be tough to figure out which one is right for you. But don’t worry – we’re here to help. Keep reading for a breakdown of the top 23 300 Blackout uppers available right now.​

Best 300 Blackout Upper

Table of Contents

Best 300 Blackout Upper Reviews

1# TRYBE Defense AR-15 Pistol Upper M-LOK .300 Blackout

TRYBE Defense AR-15 Pistol Upper .300 Blackout

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Specification

Manufacturer: TRYBE Defense
Color: Black
Finish: Black Nitride
Fabric/Material: 4140 Chrome Moly Vanadium
Cartridge: .300 AAC Blackout
Overall Length: 10.5 in
Barrel Length: 10.5 in
Gas System Length: Pistol Length
Handguard Type: Free-Float
Gun Rail: M-LOK
Threads per Inch: 5/8×24
Muzzle Device: A2 Flash Hider
Gun Type: Pistol
Gun Make: AR Platform
Gun Model: AR-15
Barrel Material: 4140 Chrome Moly Vanadium

If you’re searching for an AR-15 pistol upper that delivers on both quality and performance, the TRYBE Defense AR-15 10.5″ Upper is a perfect choice. Featuring a high-performance 4140 CMV steel barrel with 5R rifling and a 1:8″ twist, this upper is designed for precision shooting. Additionally, the 10″ M-LOK free float rail provides a stable platform for mounting optics and other accessories. The A2 flash hider gives you added concealment, while the black nitride BCG provides reliable operation. Plus, the mil-spec charging handle ensures smooth and reliable operation. When you’re ready to take your shooting to the next level, the TRYBE Defense AR-15 10.5″ Upper is the way to go!

Pros:
  • Durable high-performance 4140 CMV steel barrel with 5R rifling and 1:8″ twist
  • 10″ M-LOK free float rail
  • A2 flash hider
  • Black nitride BCG
  • Mil-spec charging handle
Cons:
  • Trybe Defense Upper is not compatible with 300 blackout barrels with a 1:7 twist
  • The charging handle is difficult to use with gloves on

 

2# Radical Firearms 300 AAC Blackout Upper Assembly

Radical Firearms 300 AAC Blackout Upper Assembly

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Specification

Manufacturer: Radical Firearms
Color: Black
Cartridge: .300 AAC Blackout
Barrel Length: 16 in

Requiring a top-quality, law enforcement grade AR-15 upper receiver assembly that’s easy to install? Look no further than the Radical Firearms 300 AAC Blackout Upper Assembly. This flat-top receiver is ready to be mounted on any Mil-Spec AR-15 lower receiver and features a forward assist for increased accuracy and faster cool-down time. With an ejection port door for easy installation, this upper receiver assembly is a great choice for any level of budget or shooter.

Pros:
  • Drop-in receiver
  • Forward assist for increased accuracy
  • Faster cool-down time
  • Ejection port door
Cons:
  • May not be compatible with all lower receivers
  • Some assembly required

 

3# Jacob Grey Firearms .300 Blackout Complete Upper Assembly

Jacob Grey Firearms .300 Blackout Upper Assembly

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Specification

Manufacturer: Jacob Grey Firearms
Color: Black
Finish: QPQ Nitride
Fabric/Material: CMV Alloy
Cartridge: .300 AAC Blackout
Barrel Profile: M4
Gas System Length: Pistol Length
Gas Block Journal Size-Diameter: .750 in
Barrel Twist Rate: 1-7
Handguard Type: Free-Float
Attachment/Mount Type: M-LOK
Gun Rail: M-LOK
Threads per Inch: 5/8×24
Gun Type: Rifle
Gun Make: AR Platform
Gun Model: AR-15
Bolt Carrier Group Included: MIL-SPEC
Charging Handle Included: MIL-SPEC

If you need an AR-15 that can perform in close quarters and at long range, the Jacob Grey Firearms .300 Blackout Complete Upper Assembly is a perfect choice. This versatile upper assembly features a cold hammer-forged barrel with a reliable pistol gas system, making it ideal for a wide range of applications. Whether you’re using it for home defense or hunting, you can trust the Jacob Grey 300 Blackout to get the job done.

Pros:
  • Cold hammer-forged barrel for superior accuracy
  • Pistol gas system for reliability
  • 4150 Chrome Moly Vanadium blanks for corrosion resistance
  • Muzzle brake to reduce recoil and muzzle flash
Cons:
  • May require adjustment to buffer weight to ensure round compatibility

 

4# Ghost Firearms Elite Complete Upper Receiver .300 Blackout

Ghost Firearms Elite Upper Receiver .300 Blackout

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Specification

Manufacturer: Ghost Firearms
Cartridge: .300 AAC Blackout
Barrel Profile: 4150 Light HBAR
Gas System Length: Pistol Length
Barrel Twist Rate: 1-8
Gun Rail: M-LOK
Condition: New

If you wish for a high-quality upper receiver for your AR-15, note the Ghost Firearms Elite Complete Upper Receiver. This top-of-the-line receiver is machined from 7075 T6 aluminum for a durable yet lightweight construction. It also features an M-Lok free float hand guard that provides ample space for mounting a variety of accessories. Plus, the included Pistol-Length Gas System ensures smooth and reliable operation. Whether you’re building a new rifle from scratch or upgrading your existing firearm, the Ghost Firearms Elite Complete Upper Receiver is a great choice.

Pros:
  • Quality components
  • Machined from 7075 T6 aluminum
  • Lightweight
  • M-Lok free float hand guard
Cons:
  • May not be compatible with some firearms

 

5# Aero Precision M4E1 Threaded .300 Blackout Complete Upper Receiver

Aero Precision M4E1 Threaded .300 Blackout Upper Receiver

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Specification

Manufacturer: Aero Precision
Cartridge: .300 AAC Blackout
Barrel Length: 10 in
Barrel Twist Rate: 1-7
Handguard Length: 9 in
Gun Rail: M-LOK
Muzzle Device: A2 Flash Hider
Gun Model: AR-15
Condition: New

The Aero Precision M4E1 Threaded .300 Blackout Complete Upper Receiver is a faultless choice for your next lightweight build. This complete upper includes a new ATLAS S-ONE Handguard, which is designed with size and weight in mind. The proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards. With a 10″ barrel and 1-7 twist rate, this upper receiver is optimized for use with .300 AAC Blackout ammunition. The A2 Flash Hider provides recoil reduction and eliminates muzzle flash, while the M-LOK gun rail allows you to attach a variety of accessories. This upper receiver is compatible with AR-15 lower receivers and is backed by a lifetime warranty.

Pros:
  • Upper is forged
  • Picatinny profile that blends seamlessly with Enhanced Series Handguards
  • .250 takedown pin holes
  • Laser-engraved T-marks
  • Includes port door and forward assist installed
Cons:
  • May be too lightweight for some
  • Barrel extension may be incompatible with some barrels

 

6# Spikes Tactical 300 Black Out Forged Upper Receiver

Spikes Tactical 300 Black Out Forged Upper Receiver

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Specification

Manufacturer: Spikes Tactical
Color: Black
Finish: Anodized
Cartridge: .300 AAC Blackout
Barrel Length: 8.3 in
Gas System Length: Pistol Length
Included Accessories: 7in SAR3

If you’re looking for the best way to complete your current rifle build, pay attention to the Spikes Tactical 300 Black Out 8.3in Forged Upper Receiver w/ 7in SAR3. This premium upper receiver kit comes with everything you need to take your rifle to the next level, including a high-quality M16 bolt carrier group that has been both high-pressure tested and magnetic particle inspected. The Spikes Tactical 300 Black Out 8.3in Upper Receiver Kit also features a durable 7075 T6 aluminum upper that is designed for outstanding durability and performance. All of the parts included in this kit are made from high-quality materials and several components are treated to resist corrosive elements, ensuring a long service life. Order yours today and see the difference that Spikes Tactical can make in your shooting experience!

Pros:
  • 1/8 Twist Rate
  • Phosphate-coated M16 bolt carrier group that is both high-pressure tested and magnetic particle inspected
  • 7075 T6 aluminum upper
Cons:
  • The forward assist may not work correctly on all rifles

 

7# Grid Defense .300 Blackout Upper Receiver

Grid Defense .300 Blackout Upper Receiver

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Specification

Manufacturer: Grid Defense
Cartridge: .300 AAC Blackout
Gas System Length: Pistol Length
Barrel Twist Rate: 1-8
Gun Rail: M-LOK

Want to purchase an upper receiver that will take your AR build to the next level? Check out the Grid Defense .300 Blackout Upper Receiver. This top-of-the-line receiver comes with an M-LOK free float handguard that provides superior accuracy and allows for the attachment of a wide variety of accessories. It’s also constructed from 7075 T6 aluminum, making it lightweight yet extremely durable. Plus, it comes with a barrel, muzzle device, and pistol-length gas system.

Pros:
  • Chambered in .300 Blackout (7.62×35)
  • 1:8 Twist Barrel
  • Pistol Length Gas System
  • Grid Defense Mil-Spec 7075 T6 Upper Receiver
Cons:
  • Pistol length gas system may be too short for some users

 

8# Brownells Brn-180 Gen 2 Complete Upper Receiver Assembly

BROWNELLS BRN-180 COMPLETE UPPER RECEIVER ASSEMBLY

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Specification

Cartridge: 223 Wylde, 7.62 x 39 mm, 300 AAC Blackout
Finish: Anodized, Cerakote
Style: Complete
Length: 10.5″, 16″, 18.5″, 10″, 18″

Do you need a top-quality upper receiver assembly that incorporates many of the best features of the AR-18/AR-180 platform? Consider the Brownells BRN-180 Gen 2 Complete Upper Receiver Assembly. This updated version of the popular BRN-180 features an adjustable gas system, making it easier than ever to fine-tune your firearm for optimal performance. The robust and reliable gas piston operating system is inherited from the AR-18/AR-180, making this upper receiver assembly a great choice for anyone looking for maximum reliability. Whether you’re a competitive shooter, law enforcement professional, or just a passionate recreational shooter, the Brownells BRN-180 Gen 2 Complete Upper Receiver Assembly is an excellent choice. Order yours today and see for yourself!

Pros:
  • Robust and reliable gas piston operating system
  • Adjustable gas system for optimal performance
  • Compatible with current mil-spec AR-15 lowers
  • Machined from high-quality materials
Cons:
  • May be difficult to adjust the gas system
  • Barrel may be too short for some shooters

 

9# Anderson Manufacturing Ar-15 Upper Receiver Assembly 300blk

ANDERSON MANUFACTURING AR-15 UPPER RECEIVER ASSEMBLY 300BLK

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Specification

Cartridge: 300 AAC Blackout
Finish: Anodized
Style: Assembled
Color: Black
Length: 16″
Twist: 1-8

The Anderson Manufacturing 300 Blackout Complete Upper Receiver is the perfect way to quickly and easily build or change an existing AR-15 to shoot the popular 300 Blackout round. The 16” barrel has a 1-8 twist rate and is Type 3 Hard Anodized – Black finished. The barrel also has a carbine length gas system with a .125 gas port, 5/8-24 threads, and comes with a 308 A2 Flash Hider. The Anderson Manufacturing 300 Blackout Complete Upper Receiver features an M4 barrel, A2 handguard, and A2 Flash Hider.

Pros:
  • The barrel is 16” long, making it a great choice for hunting or target shooting
  • The barrel is made from 7075 T6 forged aluminum, making it incredibly strong and durable
  • The handguard is A2 style, making it compatible with most AR-15 accessories
Cons:
  • The barrel may be too long for some shooters

 

#10 Adams Arms P3 AARS Complete Upper AR-Platform 300 Blackout 12.5

#10 Adams Arms P3 AARS Complete Upper AR-Platform 300 Blackout 12.5

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The Adams Arms P3 AARS Complete Upper AR-Platform 300 Blackout 12.5 is a flawless choice for anyone searching for a precision AR upper that is ready to compete. This upper features a PROOF Research Carbon Fiber Wrapped Barrel, jet comp, ambidextrous charging handle, low mass carrier, and the signature P-Series Micro Block Adjustable piston system. With its ergonomic free float rail and superior build quality, the P3 is sure to give you the edge you need on the range or in competition. Order yours today and be prepared to dominate the competition.

Pros:
  • Superior build quality
  • Proof Research Carbon Fiber Wrapped Barrel
  • Jet comp
  • Low-mass carrier
  • Adjustable piston system
Cons:
  • May be too expensive for some
  • Some may not like the jet comp
  • May not be available in all areas

 

#11 Adams Arms P2 AARS Complete Upper AR-Platform 300 Blackout 16″

Adams Arms P2 AARS Complete Upper AR-Platform 300 Blackout 16"

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Wishing for a complete upper that’s ready for action? Take a look at the Adams Arms P2 AARS. This upper is built on a military-spec AR platform and chambered in .300 AAC Blackout. It features a 16″ barrel with a government profile and a pistol-length gas system. The free float rail provides ample space for accessories, and the A2 flash hider helps keep muzzle flash to a minimum. Whether you’re a tactical shooter or simply someone who likes to be prepared, the P2 AARS is a great option.

Pros:
  • 16″ barrel with a government profile and a pistol-length gas system
  • Free float rail provides ample space for accessories
  • A2 flash hider helps keep muzzle flash to a minimum
Cons:
  • May be too heavy for some users

 

#12 Brenton USA Guide 18in .300 AAC Blackout Upper Receiver

Brenton USA Guide 18in .300 AAC Blackout Upper Receiver

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The Brenton USA Guide 18in .300 AAC Blackout Upper Receiver is a limited-series rifle that is purpose-driven in its design. It is available in Midnight, adjustable stock configuration only and includes Black Nitride carrier and bolt components as well as a 4.5 lbs single stage mil-style trigger. Limited series rifles are for rough use, and bounce around in the back of the 4×4 kind of hunter. With its .30 caliber diameter, the blackout has captured the hearts of many hog hunters. The 110 gr. Barnes and Hornady copper bullets perform very well on this platform.

Pros:
  • Gas Diverting Charge Handle
  • NiB Protective Coating on BCG
  • Lifetime Warranty
Cons:
  • No dust cover

 

#13 Primary Weapons Systems MK109 MOD 2-M Pistol .300BLK Upper Receiver

Primary Weapons Systems MK109 MOD 2-M Pistol .300BLK Upper Receiver

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The Primary Weapons Systems MK109 MOD 2-M Pistol .300BLK Upper Receiver is a high-quality piece of firearm hardware that is superb for anybody who wants to convert their AR-15 into a powerful and effective .300 AAC Blackout rifle. With a 9.75-inch barrel and a non-adjustable gas system, this upper receiver is ideal for anyone seeking top performance from their firearm. The 1-8 twist rate ensures accuracy and reliability, while the matte black finish provides a sleek and professional look. At just 5.6 pounds, this upper receiver is also incredibly lightweight and easy to handle.

Pros:
  • It has a matte black finish that provides a sleek and professional look
  • Outstanding performance
  • The 1-8 twist rate ensures accuracy and reliability
  • Lightweight and easy to handle
Cons:
  • Some users may not like the matte black finish

 

#14 Jacob Grey Firearms Ultralight 300 BO Complete Upper Assembly

Jacob Grey Firearms Ultralight 300 BO Complete Upper Assembly

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Jacob Grey Ultralight Complete Upper Assembly is a top-of-the-line AR-15 complete upper assembly that won’t break the bank. This quality upper assembly is designed with the next-generation AR-15 in mind, featuring a sleek, refined look that doesn’t sacrifice the classic lines of the AR-15 platform. The Jacob Grey Ultralight Complete Upper Assembly is built around a 7075-T6 billet upper receiver that has been specifically machined and cut to reduce excess material and reinforce areas that see excess use and wear. It comes standard with the JG-designed free float 7-sided M-LOK hand-guard that is also lightweight and leaves plenty of room for customization or the addition of numerous accessories available for the AR-15 platform. The barrel is chambered in 300 Blackout with a 1:8 twist rate.

Pros:
  • Machined from aerospace aluminum
  • Free float handguard
  • 1:8 twist rate barrel
  • MIL-SPEC parts
  • Laser-engraved logo
Cons:
  • May not be compatible with all aftermarket parts
  • Barrel is not chrome lined

 

#15 American Defense Manufacturing 300 Out 10.5 Inch Barrel M-Lok Rail Upper Reciever

American Defense Manufacturing 300 Out 10.5 Inch Barrel M-Lok Rail Upper Reciever

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The American Defense Manufacturing 300 Out 10.5 Inch Barrel M-LOK Rail Upper Receiver is perfect for your next AR build. This top-of-the-line upper receiver comes complete with a Criterion Barrel and Premium Bolt Carrier Group. It also features a Raptor Charging Handle for easy operation. For added durability, this upper receiver has an ADM Nitrite finish. Plus, it comes with a Battle Comp Muzzle Device for optimum performance.

Pros:
  • Comes with a Criterion Barrel
  • Features a Raptor Charging Handle
  • ADM Nitrite BCG finish for durability
  • Battle Comp Muzzle Device included
Cons:
  • May not be compatible with all firearms
  • Limited rail space

 

#16 POF USA P415 Edge Upper Receiver Assembly

POF USA P415 Edge Upper Receiver Assembly

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The POF USA P415 Edge Upper Receiver Assembly is a top-of-the-line product that was designed for optimum performance in all environments. Originally developed over 15 years ago, POF USA has constantly been testing, upgrading, and improving the design to perfection. The P-415 features the E2 Extraction Technology for easy cycling during a repeated fire. It also has complete ambidextrous fire controls to cater to both right- and left-hand dominant shooters, ensuring everyone can use it comfortably. Aside from the free-floating handrail, POF has also made many other improvements to reduce the weight of the P-415, such as their all-new handguard, which reduces the size by nearly 20%.

Pros:
  • Features the E2 Extraction Technology for easy cycling
  • Complete ambidextrous fire controls to cater to both right- and left-hand dominant shooters
  • Reducing the weight of the P-415
Cons:
  • Some people may find the handguard to be too small

 

#17 Radian Weapons Model 1 Complete Upper Receiver

Radian Weapons Model 1 Complete Upper Receiver

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The Radian Weapons Model 1 Complete Upper Receiver is the result of simple design philosophy: use the highest quality materials, precise CNC machining, and the best components available to create a weapon that seamlessly blends form and function. The Model 1 features fully ambidextrous controls, making it ideal for both left and right-handed shooters. Every Model 1 is hand-assembled by a trained gunsmith, who inspects, tests fires, and cleans the weapon to guarantee it meets the highest quality standards. No detail has been overlooked in the creation of this superior upper receiver, which is why it comes with a lifetime guarantee.

Pros:
  • Highest quality materials
  • Most precise CNC machining
  • Best components available
  • Fully ambidextrous controls
  • Guaranteed for life
Cons:
  • The higher price tag
  • Fewer features than some other 300 blackout uppers
  • Not compatible with all 300 blackout rifles

 

#18 CMMG, Inc RESOLUTE 300 Series Upper Receiver

CMMG, Inc RESOLUTE 300 Series Upper Receiver

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The CMMG, Inc RESOLUTE 300 Series Upper Receiver Group is an excellent choice for those who refuse to compromise on quality. This upper receiver group is produced with incredibly long-lasting and reliable materials, and it will provide you with years of reliability. For a great way to make sure you are shooting with one of the best, most long-lasting upper receiver groups the shooting industry has to offer, choose the CMMG, Inc RESOLUTE 300 Series Upper Receiver Group.

Pros:
  • Robust and reliable construction
  • Excellent quality materials used
  • Long-lasting
  • Accurate mounting point
Cons:
  • Higher price point
  • Quality materials may make it heavier than other options

 

#19 Stag Arms 15 Right Hand 8in .300 AAC Blackout Upper Receiver

Stag Arms 15 Right Hand 8in .300 AAC Blackout Upper Receiver

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The Stag Arms 15 Right Hand 8in .300 AAC Blackout Upper Receiver is an outstanding choice for shooters who want the power and performance of a .300 AAC Blackout in a smaller package. This Upper Receiver features an 8-inch 1-7 twist QPQ Nitride barrel, 30 caliber A2 birdcage flash hider, and Stag Arms Slimline 7in M-LOK handguard. The Stag Arms 15 Right Hand 8in .300 AAC Blackout Upper Receiver is a great choice for shooters who want the flexibility to shoot both sub-sonic and super-sonic ammunition.

Pros:
  • Features an 8-inch 1-7 twist QPQ Nitride barrel
  • 30 caliber A2 birdcage flash hider
  • Designed around the ideal length barrel for sub-sonic and super-sonic shooting
Cons:
  • No bolt carrier group or charging handle included

 

#20 CBC Industries AR-15 Complete Upper Receiver Pistol Kit, 300AAC, 10.5in

CBC Industries AR-15 Complete Upper Receiver Pistol Kit, 300AAC, 10.5in

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Looking for a high-quality, affordable AR-15 pistol build kit? Look no further than the CBC Industries AR-15 Complete Upper Receiver Pistol Kit! The receiver is a flat top M4 Mil-Spec upper receiver forged from CNC Machined 7075-T6 Aluminum, the hardest and most durable material of any upper! The kit also includes a pistol receiver extension, standard 3 oz carbine buffer, carbine spring, castle nut, end plate, comfortable foam cheek pad, and a complete AR-15 Lower Parts Kit ready for installation in your lower receiver. With everything you need to be included in one convenient kit, there’s no excuse not to build your custom AR-15 pistol today!

Pros:
  • Made from premium materials
  • Forged upper receiver
  • MIL-SPEC components
  • Pistol-length gas system
Cons:
  • Barrel is not threaded

 

#21 Spikes Tactical 300 Black Out 16in Forged Upper Receiver

Spikes Tactical 300 Black Out 16in Forged Upper Receiver

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If you want to get a versatile and durable upper receiver for your next rifle build, look no further than the Spikes Tactical 300 Black Out 16in Forged Upper Receiver. This receiver is crafted from Cold Hammer Forged steel for increased strength and durability, and is coated in phosphate for enhanced resistance to corrosion and wear. The .750 gas block seat and M4 feed ramps offer smooth feeding operation, while the free-floating rail and snag-free apertures make this upper a top choice for most shooters. Plus, the forward assist adds an extra element of safety to this assembly. Tested and function checked, this upper receiver is a great addition to your existing firearm.

Pros:
  • Cold Hammer Forged Barrel and Receiver
  • Phosphate Coating
  • 5/8 X 24 Thread Pitch for Muzzle
Cons:
  • The forged upper receiver is not mil-spec

 

#22 Spikes Tactical 300 Black Out 8.3in Forged Upper Receiver w/10in

Spikes Tactical 300 Black Out 8.3in Forged Upper Receiver w/10in

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The Spikes Tactical 300 Black Out 8.3in Forged Upper Receiver W/10in is a high-quality product that will provide you with the performance you need. The upper receiver is made from forged aluminum and features a black anodized finish. The barrel is 8.3 inches long and features a pistol-length gas system. The receiver also comes with a 10in BAR2 rail and Barking Spider muzzle brake.

Pros:
  • Pistol-length gas system
  • 10in BAR2 rail
  • Barking Spider muzzle brake
Cons:
  • Anodized finish may wear over time

 

#23 Ghost Firearms Vital .300 Blackout Upper Receiver

Ghost Firearms Vital .300 Blackout Upper Receiver

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Wish to get ahead in the gun game? You need a powerful firearm like the Ghost Firearms Vital .300 Blackout Upper Receiver. This upper receiver is the perfect addition to your AR15 Lower Parts, providing an extended handguard that helps prevent injuries. The pistol gas system and free-floating handguard also allow you to make the most of your time behind the sight. Plus, the birdcage flash hider adds to the rugged aesthetic of your Ghost Firearms Vital .300 Blackout Upper Receiver. So make every shot count and pick up your Ghost Firearms Vital .300 Blackout Upper Receiver today.

Pros:
  • Powerful firearm
  • Easy to install
  • Rugged aesthetic
  • Free-floating hand guard
Cons:
  • May be too powerful for some

 

FAQ

What Upper do I need for 300 Blackout?

When it comes to 300 Blackout uppers, there are a few key things to keep in mind. First, you want to make sure that the upper is compatible with your lower. Second, you’ll want to choose an upper with the right barrel length and twist rate for your needs. Third, pay attention to the gas system – you’ll want to choose an upper with a gas system that’s properly sized for the 300 Blackout round.

With those things in mind, you may take a look at some of the best 300 Blackout uppers on the market, which are presented in the article.

Can I put a 300 Blackout Upper on my AR-15?

The 300 Blackout is a cartridge that was designed specifically for the AR-15. As such, it can be used with any upper receiver that is intended for use with an AR-15. This includes both standard and 300 Blackout-specific upper receivers.

What is the difference between a 300 Blackout Upper and a standard AR-15 upper?

The main difference between a 300 Blackout Upper and a standard AR-15 upper is the barrel. 300 Blackout barrels are designed specifically for use with the 300 Blackout cartridge. This means that they have a slightly different internal diameter and rifling than standard AR-15 barrels. 300 Blackout barrels also tend to be shorter than standard AR-15 barrels, which makes them more maneuverable in close-quarters situations.

What are the benefits of using a 300 Blackout Upper?

The 300 Blackout provides several benefits for the AR-15 platform. Its design allows it to be used with a wide variety of existing AR-15 parts, making it ideal for shooters who want to upgrade their rifles without having to start from scratch.

The 300 Blackout is also a very versatile cartridge, capable of being used for everything from plinking to hunting. It is an excellent choice for those who want a do-it-all firearm.

Can you run 300 Blackout in a 5.56 lower?

You can, but you’ll have to use a 300 blackout magazine. A 300 blackout upper will also fit on any standard AR-15 lower.

What is the best 300 blackout upper for the money?

There are a lot of great 300 blackout uppers on the market, so it really depends on your budget and needs. Read the article and find one which best fits your needs and your budget.

 

Conclusion

300 blackout uppers are all the rage right now, and for good reason. They offer excellent performance in a variety of settings, making them an ideal choice for just about anyone. In this article, we’ve looked at some of the best 300 blackout uppers on the market and what makes them so great. We’ve also provided some tips to help you choose the right one for your needs. So, whether you’re looking for your first 300 blackout upper or you’re just looking to upgrade your current setup, we hope this article has helped you make a decision. Thanks for reading!

 

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