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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.
Table of Contents
- Best 300 Blackout Upper Reviews
- 1# TRYBE Defense AR-15 Pistol Upper M-LOK .300 Blackout
- 2# Radical Firearms 300 AAC Blackout Upper Assembly
- 3# Jacob Grey Firearms .300 Blackout Complete Upper Assembly
- 4# Ghost Firearms Elite Complete Upper Receiver .300 Blackout
- 5# Aero Precision M4E1 Threaded .300 Blackout Complete Upper Receiver
- 6# Spikes Tactical 300 Black Out Forged Upper Receiver
- 7# Grid Defense .300 Blackout Upper Receiver
- 8# Brownells Brn-180 Gen 2 Complete Upper Receiver Assembly
- 9# Anderson Manufacturing Ar-15 Upper Receiver Assembly 300blk
- #10 Adams Arms P3 AARS Complete Upper AR-Platform 300 Blackout 12.5
- #11 Adams Arms P2 AARS Complete Upper AR-Platform 300 Blackout 16″
- #12 Brenton USA Guide 18in .300 AAC Blackout Upper Receiver
- #13 Primary Weapons Systems MK109 MOD 2-M Pistol .300BLK Upper Receiver
- #14 Jacob Grey Firearms Ultralight 300 BO Complete Upper Assembly
- #15 American Defense Manufacturing 300 Out 10.5 Inch Barrel M-Lok Rail Upper Reciever
- #16 POF USA P415 Edge Upper Receiver Assembly
- #17 Radian Weapons Model 1 Complete Upper Receiver
- #18 CMMG, Inc RESOLUTE 300 Series Upper Receiver
- #19 Stag Arms 15 Right Hand 8in .300 AAC Blackout Upper Receiver
- #20 CBC Industries AR-15 Complete Upper Receiver Pistol Kit, 300AAC, 10.5in
- #21 Spikes Tactical 300 Black Out 16in Forged Upper Receiver
- #22 Spikes Tactical 300 Black Out 8.3in Forged Upper Receiver w/10in
- #23 Ghost Firearms Vital .300 Blackout Upper Receiver
- What Upper do I need for 300 Blackout?
- Can I put a 300 Blackout Upper on my AR-15?
- What is the difference between a 300 Blackout Upper and a standard AR-15 upper?
- What are the benefits of using a 300 Blackout Upper?
- Can you run 300 Blackout in a 5.56 lower?
- What is the best 300 blackout upper for the money?
Best 300 Blackout Upper Reviews
1# TRYBE Defense AR-15 Pistol Upper M-LOK .300 Blackout
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!
2# Radical Firearms 300 AAC Blackout Upper Assembly
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.
3# Jacob Grey Firearms .300 Blackout Complete Upper Assembly
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.
4# Ghost Firearms Elite Complete Upper Receiver .300 Blackout
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.
5# Aero Precision M4E1 Threaded .300 Blackout Complete Upper Receiver
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.
6# Spikes Tactical 300 Black Out Forged Upper Receiver
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!
7# Grid Defense .300 Blackout Upper Receiver
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.
8# Brownells Brn-180 Gen 2 Complete Upper Receiver Assembly
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!
9# Anderson Manufacturing Ar-15 Upper Receiver Assembly 300blk
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.
#10 Adams Arms P3 AARS Complete Upper AR-Platform 300 Blackout 12.5
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.
#11 Adams Arms P2 AARS Complete Upper AR-Platform 300 Blackout 16″
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.
#12 Brenton USA Guide 18in .300 AAC Blackout Upper Receiver
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.
#13 Primary Weapons Systems MK109 MOD 2-M Pistol .300BLK Upper Receiver
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.
#14 Jacob Grey Firearms Ultralight 300 BO Complete Upper Assembly
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.
#15 American Defense Manufacturing 300 Out 10.5 Inch Barrel M-Lok Rail Upper Reciever
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.
#16 POF USA P415 Edge Upper Receiver Assembly
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%.
#17 Radian Weapons Model 1 Complete Upper Receiver
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.
#18 CMMG, Inc RESOLUTE 300 Series Upper Receiver
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.
#19 Stag Arms 15 Right Hand 8in .300 AAC Blackout Upper Receiver
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.
#20 CBC Industries AR-15 Complete Upper Receiver Pistol Kit, 300AAC, 10.5in
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!
#21 Spikes Tactical 300 Black Out 16in Forged Upper Receiver
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.
#22 Spikes Tactical 300 Black Out 8.3in Forged Upper Receiver w/10in
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.
#23 Ghost Firearms Vital .300 Blackout Upper Receiver
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.
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.
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!