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Table of Contents
Top 16 Best Magazine For Diamondback 300 Blackout
Earlier many shooters had to use a magazine designed for another cartridge, using .300 Blackout in the AR-15 rifle, limiting its compatibility and performance. As a rule, 5.56x45mm becomes an alternative because of both cartridge parts’ compatibility.
Why do we need 300 Blackout Magazines?
It is better to choose a magazine specially chambered in .300 Blackout, because of increasing overall reliability, safer way to feed this round without dangerous cross-loading issues.
The 30-Round magazine features impact and crush-resistant molded hard Polymer construction with clear polymer side windows to see the load status. It comes with a pop-off dust cover to minimize debris intrusion and prevent storage damage; a four-way anti-tilt follower to ensure smooth feeding even with dust or sand.
The 30-Round polymer magazine is equipped with a specially built non-tilting follower, providing flawless feeding, translucent smoke finish (easy to count rounds), and aggressive texturing for better grip.
These mags are manufactured for use with weighty subsonic .300 Blackout ammo (200+ grain) due to the updated inner geometry that facilitates longer heavier cartridges to stack duly. The mags are equipped with a floor plate, which is a contrasting flat dark earth color for easy visualization. Lancer designed three magazine models: two 10-rd in Translucent Smoke and Opaque Black for .300 Blackout, and one 5-rd in Translucent Smoke for .223/5.56 calibers. There are particular molded .300 Blackout markings on the magazine body exterior.
Video review
Pros
Increased feeding dependability compared with a conventional 5.56/.223 mags
Perfect fit and feeding
Excellent for heavy grain 300 BLK ammunition
No need for modifications as it’s done at the factory
Great hunting mag looks nice on the rifle
Holds the ammo tightly so it doesn’t rattle around
Runs 5.56, 300 blk, and 350 legend without malfunction
Very lightweight
A quality combination of polymer and metal construction
Cons
Wouldn’t lock into place in the S&W M&P 15 sport 2
Color: Black
Finish: Black Oxide
Fabric/Material: 17-7 Stainless Steel
Magazine Capacity: 10 Round
Caliber: 5.56x45mm NATO
Gun Model: AR-15
Additional Features: Easier to load than standards magazine, the follower can be retracted to load
The AR-15 CompMag with a round counter features a new expandable insert built right into its side for better locking. Unique fixed magazine design ensures an ammo feeding of a contained or constantly attached device to a gun: magazine can be removed only after disassembly of the firearm action.
The mags fit apart from standard AR-15 type lowers (M4, M16, AR15), also firearms, which accept STANAG (AR-15) magazines and have removable upper receivers (the Bushmaster ACR, SCAR16, CZ Bren, Daewoo DR200, SIG MCX, and SIG 556. But they are not paired with lowers, which are outfitted with a custom or extended magazine well (such as Sharps Bros, Seekins SP225, Spike’s Jack, and HKMR), or with BullPup guns such as the Tavor.
Video review
Pros
Lifetime Warranty
Easier to load than standards mags (no heavy spring to push each round against)
Operates with .223, 5.56, .300ACC Blackout, and .277 Wolverine Ammo
Fixed installation methods allow the customers to modify their mags up to them, while keeping the favorite AR-15 features, such as pistol and forward grip, flash hider, and retractable stock
No pins to pull out to reload
One screw mounting: no holes to drill
Fully loads on a closed or open bolt
Crush resistant FRP composite (G.F. Nylon 6) construction, which sidewalls are thicker than most polymer mags
No fumbling with extra parts or loaders
The follower can be retracted to load
CA compliant version
Cons
Pricey
False advertising: the neat loading design doesn’t feasibly help cleaning a jam
A locked mag AR-15 is allowed in California: but this magazine isn’t appropriate as even after max turning the screw, it can be pulled off with the little pin
New item: Yes
Ar-15 accessory: Y
Capacity: 10 rounds
Finish: Flat dark earth
Material: Polymer
Other features: 10 Round capacity in a 30 Round body
The Hexmag Polymer Magazine, Series 2, is a 30 round magazine body, which is limited to 10 rounds; it is not a short one. There are 4 available models in different colors: OD Green, Grey, Flat Dark Earth, or Black: they can be assembled with HexID colors according to the order. Such custom mags are not for resale, they are only available for consumers. The mags are made from PolyHex2 Advanced with the HEXTURE design pattern to ensure a solid grip for easy and fast reloading.
Video review
Pros
Inexpensive price but decent quality
Appropriate for states with strict magazine restrictions
Easy to grip
Composite construction is rigid but lightweight
Looks great
Comfortable to load
Quality plastic: reloads without worrying about breaking any mags, the plastic isn’t cheap
Easily convertible to a 30-round magazine
No jams in the spring
Solid construction
The texture is great
The longer magazine makes it much easier to handle compared to the small 10 rounders that barely stick out of the mag well
CA Compliance
Cons
Hex pattern can make it difficult to insert into the mag well
Not obvious advertising: confusing capacity
Can be inserted too far into the mag well or get stuck there
The Speed magazine is an improved version of the battle-proven USGI one, which is good for OEM, Law Enforcement, and Military units. These CPD mags are equipped with the new snap anti-tilt follower. The body is constructed from heat-treated aluminum (6061-T6), delivering sturdiness with only a slight increase in weight. The due rounds’ stacking improves thanks to a combination of the .020-gauge material in stainless steel with the increased inner dimensional room, significantly decreasing jams failure.
Video review
Pros
Lightweight, but durable
The Stainless-Steel Magazine outperforms the mil-spec aluminum one in every test
A wide range of colors is part of both anodizing process and metal
An orange follower
Safe for extended storage while loaded without flex or swell like polymer
The technology of fully automated robotic welding stations is used, ensuring high-quality welding
Cons
Impossible to get a full 5 rounds: it seems they just haphazardly crimp the mags stopping the follower from taking full capacity
The body is far from Aluminum it seems to be some kind of powdered metal or just cheap pot-metal: after dropping the mag on the ground, a large chunk broke off its bottom sending the spring flying out
The loading and unloading area is sharp and tends to snag
Low quality and poorly assembled: the teeth that hold the bottom plate can be easily broken
The paper-thin follower appears to be some type of ABS plastic
Looking like you have 20 rounds (but you don’t): it’s a magazine for 20 rounds that is crimped on the outside so the follower can only go down a 10-round depth
This high-quality polymer magazine with tempered-steel spring operates well with the ACC, MDT TAC21, ESS, XRS, LSS-XL, and LSS Chassis systems, and many other M24 type chassis and bottom metals. But the mags do not fit the following inlets: Browning X-bolt, Ruger American in 204/ 223/ 556/ 300 AAC, Winchester XPC (may need fitting in Winchester Model 70). According to the customers’ feedback, some systems may need adjustment: KRG X-Ray, XLR Chassis; GRS rifle stocks, CDI Precision bottom metals, Pacific tool, and Gauge bottom metals are configured for AICS mags; 223 Magazine requires feed lip fitting and modifications to the inner ribs; 300 Blackout AR-15 mags may not feed on an AICS magazines in the bolt action rifle.
Pros
A detachable box mag makes loading of bolt-action rifle easier and quicker than an inner magazine, being ideally suitable for range training and competitive target shooting
Easy to load, and release
Put a Savage Axis 300 blk in the LSS chassis: the 223 mag runs with 300 blk in a savage axis and is very smooth
Pretty sturdy for the range
Works for the Magpul hunter stock for .204 Ruger after removing a bit of material from the top front and rear
Functions flawlessly with factory ammo
Longer OAL Friendly: good for heavy bullets like the Berger VLDs and Hornady ELD-Ms for bolt action rifles, can be loaded as long as 2.4 in with no feeding issues
Dependable as spare mags for hunting or competition
Operates well on the newer MDT LSS chassis and a Brownells branded MDT chassis for a Tikka T3, no fitment issues
Fits the Remington 700 .223 ACIS DBM like a glove, the price, and mags quality are great
Cons
Remington M700 SA .223 installed in AICS Stage II setup: rough fit, doesn’t lock up in mag well and load sequence is rough and troublesome
Feed lips cannot be adjusted, not convenient for any plastic magazine
Color: Black/Orange, Matte Black/Orange
Finish: Matte
Fabric/Material: 410 Stainless Steel
Magazine Capacity: 5 Round
Caliber: 5.56x45mm NATO, .300 AAC Blackout, .223 Remington
Gun Make: AR Platform
Gun Model: AR-15
Gun Type: Rifle
Additional Features: EverFlex anti-fatigue spring technology for long life and ultimate reliability
Included Accessories: 1 Mag Sealed Plastic Bag, 50/case
Duramag constructed the mags incorporating Specially Engineered Geometry and Advanced Proprietary Coatings, which due to Black-T at the molecular level minimizes the coefficient of friction, extending service life through an unparalleled lubricity. All CPD mags have the new snap on the anti-tilt follower.
Video review
Pros
EverFlex anti-fatigue spring technology for long life and maximal dependability
SS Advanced Proprietary Coatings ensure a smooth, flawless operation
Not Jam even using the dirtiest ammo
The technology of fully automated robotic welding stations excludes defects
Cons
The 5.56 stainless steel Magazine is dented easily
MDT Detachable box mags are engineered to be compatible with the MDT TAC21, LSS Chassis systems, and many other M24 type chassis and bottom metals, as well as Howa 1500 mini-action.
Video review
Pros
Durable construction made from high-quality Polymer
Color: Black
Magazine Capacity: 7 – 10 Round
Gun Make: Remington
Gun Model: Remington Model 700 BDL
Gun Type: Rifle
The stainless-steel magazine with Teflon matte black finish comes with the polymer boot, which allows easily installing and removing the magazine box. Thanks to a center-feed design every round stack properly, because the cartridge directly lines with the chamber every time. After adjusting the feed lips, one of the magazine boxes with a new Gen II design can be used for almost any caliber. They will not be compatible with floor plate conversion sets before 2012.
Video review
Pros
Sturdy polymer boot that encircles the bottom of each mag
Rounds stack duly due to the stainless-steel follower with an extra-large spring
Caliber: 5.56x45mm NATO, .300 AAC Blackout, .223 Remington
Gun Model: AR-15
Number of Rounds: 90
Attachment/Mount Type: Weaver, Picatinny
Additional Features: Constructed Of Lightweight and Durable Polymer
Magazine Loader without MagDump comes with Weaver or Picatinny rail attachment. The hopper-fed, loose ammunition loader is manufactured of lightweight and rigid Polymer. This loader is irreplaceable for preparing for a full day at the range.
Video review
Pros
Fits all Mil-Spec AR-15 mags
90-Round capacity hopper
Needs much less physical strength and effort to fully load mags
No round damage while loading or stop loading when the magazine is full due to the built-in safeties
Loading is super-easy, without hand fatigue, just insert the mags securely
Two options of mounting: Picatinny or Weaver rail
Places ammo in either direction
Operates exactly as advertised
Great tool for loading high capacity mags
Relatively compact unit
Loaded mags save time at home and the range
No need to use stripper clips, so you can save money on each round
Magazine loading time is decreased twice
Cons
Need to keep count toward the end of the hopper
Will jam if you go too fast
The 7.62×39 version has to be used/mounted near the table edge
Impact/crush-resistant molded hard polymer, Black. Compatible with AR-15/M4/M16, HK® 416, MR556A1, M27 IAR, British SA-80, FN® SCAR™ MK 16/16S, and other similar lowers. 5.56mm/.223 ammunition only.
These mags with extra reinforcement in the mag catch and feed lip areas fit AR-15, M4, M16, HK 416, MR556A1, M27 IAR, British SA-80, FN SCAR MK 16/16S, and other similar lower. Advanced clear polymers in windows are more resistant to chemicals and impact than the original MagLevel PMAG. MAGPUL offers 1, 10 or 100 mags (only for 5.56 mm NATO) in the pack.
Video review
Pros
USA made;
Impact and crush-resistant molded hard Polymer
Clear polymer side windows allow the shooter to see the load status
The removable floor plate is both stronger and slimmer for easier side-by-side carry in tight mag pouches
Included pop-off dust cover minimizes debris intrusion, preventing storage damage
A new-design four-way anti-tilt follower delivers smooth feeding even with dust or sand
AR-15 magazine chambered in 300 Blackout. The magazine is constructed of an aluminum body with a red magazine follower. Available in 10, 20, and 30 rounds.
The AR-15 Aluminum magazine comes with a red follower.
Video review
Pros
Lightweight
Cons
PSA build will not feed rounds into the chamber
Poor quality
Doesn’t feed duly: the follower is on the wrong side
These mags feature distinct rib designs to allow the shooter a distinct visual and tactile difference from any other PMAG to minimize dangerous cross-loading issues. The magazines are outfitted with an easily removable slim floor plate, aggressive front and rear texture, a paint pen dot matrix for marking and identification, and a dust/impact cover.
Video review
Pros
Designed especially for .300 Blackout, meeting this caliber compatibility and performance requirements
The safer way to feed .300 BLK in the rifle
Next-generation impact and crush resistant polymer
Lightweight
Loads great
Cons
Compared to the Gen2 5.56’s the polymer is thinner and cheaper feeling: raw mold, the feed lips are sharp-edged, not rounded
Translucent smoke finish
30-round capacity
Features feed lips made from hardened steel
Provides aggressive texturing for enhanced grip
The polymer magazine with the translucent smoke finish is equipped with a specially built non-tilting follower, which geometry is purpose-built for the cartridge, and hardened steel feed lips.
Video review
Pros
Trouble-free feeding
Aggressive texturing for better grip
Passed all military-grade testing for high-performance use
Corrosion and chemical resistance
Looks nice
Easy to count rounds due to the transparent finish
Cons
The plastic feels thin and may crack easily if dropped
The more compact magazine operates well with small rifle-caliber platforms, textured so the shooter can feel the difference, easier to use at the range. The mags are made of rugged polymer, coming with an easy-to-remove baseplate for cleaning, a dot matrix for organization, and a dust cover, which protects feed lips from impacts as well.
Video review
Pros
Manufactured in the USA
A safer way to shoot due to a distinct look and feel: no risk of chambering a 300 Blackout round in 5.56 NATO
Aluminum construction magazines are light but sturdy, they get dents when dropped but are usually fine. 5-round magazines, compared with full-length ones, are convenient for prone shooting. If you live in the states with strict magazine limits, Lancer or MDT magazines with 5 and 10 round capacity.
Gunsmith, Hunter, Gentleman Adventurer. Life is too short to shoot mass-produced guns. A once-in-a-lifetime hunt deserves a one-of-a-kind gun. Read about me.
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