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300 blackout (BLK) is a rifle cartridge of an intermediate class, suitable for home defense, hunting, target shooting, and plinking.

Best 300 Blackout Magazine - Editor's Choice

The effectiveness of shooting distance should be taken into account, depending on the 300 AAC Blackout barrel diameter: 460 meters for a 16-inch barrel, 440 meters for a 9-inch.

Why do we need a 300 blackout magazine?

300 Blackout or 300 AAC are different names for the same cartridge, which was developed to empower the AR platform and penetrate on intermediate distances with reduced recoil. 300 AAC magazine is considered for 30, 10, 20 round capacity or 5/30 crimped.

Best 300 Blackout Magazine Review | Best Magazine for 300 Blackout

ImageProductBrand
Lancer L5 Advanced Warfighter MagazineLancerBUY
Daniel Defense DD Magazine 10 RoundDaniel DefenseBUY
Magpul PMAG Gen M3 .300 Blackout MagazineMagpulBUY
Lancer - AR-15 L5AWM 300BLK Translucent Smoke Magazine 30RDLancerBUY
CZ 13014 CZ 527 300 AAC Blackout 5 Rd Black FinishCZ - USABUY
MAGPUL - AR-15 30RD PMAG GEN M3 WINDOW magazine 300BLKMAGPULBUY
Duramag Speed AR-15 300BLK Aluminum Rifle MagazineDuramagBUY
D&H INDUSTRIES AR-15 300 BLACKOUT MagazinesD&H INDUSTRIESBUY
Duramag SS AR-15 300BLKDuramagBUY

#1 Lancer L5 Advanced Warfighter 300 Blackout Magazine

1 Lancer L5 Advanced Warfighter Magazine

Specification

Material: Steel
Magazine Capacity: 10 Round
Caliber: .300 AAC Blackout

Lancer developed magazines, made from steel, with visually-noticeable flat dark earth floor plate, improving internal geometry of longer heavier cartridges to stack duly. Especially for 300 AAC, there are two 10-Round models: Opaque Black and Translucent Smoke with molded markings (.300 Blackout) on the outside of the mags casing.

Pros:
  • Runs 300 blackout flawlessly;
  • Lightweight;
  • Loads easily;
  • There are available models for .223 Remington and 5.56x45mm NATO as well;
  • Easy to identify 300 BLK mags among others due to a different color of the base plate.
Cons:
  • None yet.

#2 Daniel Defense DD 300 Blackout Magazine

Daniel Defense DD Magazine 10 Round

Specification

Material: Steel
Magazine Capacity: 10 Round
Caliber: .300 AAC Blackout

Daniel Defense refined the feed lip design to make magazine feeding and reliability more efficient. This 10-Round magazine has the non-snag design of impact-absorbing baseplate with a reinforced anti-tilt follower. The lightweight DD magazine is made from a reinforced molded carbon-fiber polymer.

Pros:
  • 10-Round Limited State Compliant;
  • Well-built from rigid material;
  • Cycles flawless through the carbine;
  • Enhanced grip is provided due to the textured surfaces.
Cons:
  • It’s impossible to disassemble this State Mandated Limited magazine neither for cleaning nor maintenance, as it is factory sealed.

#3 Magpul PMAG Gen M3 .300 Blackout Magazine

Magpul PMAG Gen M3 .300 Blackout Magazine

View on BassPro View on Cabelas View on Brownells

Specification

Material: Steel
Magazine Capacity: 10 Round
Caliber: .300 AAC Blackout

The .300 Blackout PMAG with 30-round capacity consists of a reinforced black casing with aggressive front and rear texture, a slim floorplate, which is simply to remove, a paint-pen dot matrix to mark identification, and a dust cover. Magpul developed .300 Blackout magazines with distinct rib design, ensuring visual and tactile differences, having excluded cross-loading danger with any other PMAG.

Pros:
  • Reliable performance with a wide bullet profiles diversity native to the .300 Blackout cartridge;
  • Compatibility with 5.56x45mm parts;
  • Innovative crush- and impact-resistant polymer;
  • Needs for heavy rounds in 300 AAC.
Cons:
  • None yet.

#4 Lancer AR-15 L5AWM 300 Blackout Magazine 30RD

Lancer systems - AR-15 L5AWM 300BLK Translucent Smoke Magazine 30RD

Specification

Material: Steel
Magazine Capacity: 30 Round
Caliber: .300 AAC Blackout

This magazine is crafted with hardened steel feed lips for one of the most popular calibers for the AR-15 platform, combining steel and polymer, adopting it for the dimensions of the .300 BLK cartridge. These Lancer magazines feature non-tilting followers with geometry, specially built for the cartridge, having passed all military-grade testing. These mags have a translucent smoke finish and a 30-round capacity.

Pros:
  • Translucence is a convenient and good-looking perk;
  • Easy to load: reliable, trouble-free feeding;
  • Corrosion- and chemicals-resist;
  • Lightweight;
  • Quality construction;
  • Textured base for comfy grabbing.
Cons:
  • Used plastic material feels thin and may crack easily if dropped.
  • The subsonic cycling issue;
  • 300 blackouts stamped on the side, but it is hard to see because it’s not filled with color.

#5 CZ 13014 CZ 527 300 Blackout Magazine 5 Rd

CZ 13014 CZ 527 300 AAC Blackout 5 Rd Black Finish

Specification

Material: Steel
Magazine Capacity: 5 Round
Caliber: .300 AAC Blackout

CZ-USA magazines are made of steel with a black finish. Due to the small capacity of 5 rounds can be used even in states, where the magazine’s capacity limits exist. These detachable CZ 527 mags are designed for 300 AAC Blackout and Whisper calibers (7.62x35mm).

Pros:
  • Limited State Compliant;
  • Lightweight and compact.
Cons:
  • California’s Proposition 65.

#6 MAGPUL – AR-15 30RD PMAG GEN M3 300 Blackout Magazine

MAGPUL - AR-15 30RD PMAG GEN M3 WINDOW magazine 300BLK

Specification

Material: Steel
Magazine Capacity: 30 Round
Caliber: .300 AAC Blackout

MAGPUL GEN M3 WINDOW is a refined polymer-molded magazine, purpose-built for the AR-15/M16/M4 platform, representing the 3d-generation of PMAG, improving its versatility, strength, and reliability. MAGPUL made a new construction four-way anti-tilt follower, providing smoother feeding, even being contaminated by sand or dust. This magazine features: a pop-off dust cover to diminish debris intrusion and secure storage; a rigid and slim removable floorplate to simplify side-by-side carrying in tight mags pockets.

Pros:
  • Compatible with the HK 416 and MR556A1, British SA-80, M27 IAR, and the FN SCAR MK 16/16S;
  • Dependable PMAG, using Battle-Hardened combat experience;
  • Resistant to impacts and crushes;
  • Holds up in the winter cold and snow;
  • An each-side pen dot matrix for ID marking, resistant to handling wear;
  • PMAG 30 is available with a convenient transparent polymer each-side window to see the load status;
  • Extra reinforced feed lip and mag catch areas.
Cons:
  • None yet.

#7 Duramag Speed AR-15 300BLK Aluminum Rifle Magazine

Duramag Speed AR-15 300BLK Aluminum Rifle Magazine

Specification

Material: 6061-T6 Aluminum
Caliber: 5.56x45mm NATO, .300 AAC Blackout, .223 Remington
Gun Make: AR Platform
Gun Model: AR-15
Gun Type: Rifle
Magazine Capacity: 10/5 Round

Duramag developed rifle magazines, combining heat treatment and stainless steel (400 series) to make them a bit heavier, but much more durable than aluminum ones. These CPD magazines with a new snap on the anti-tilt follower and bigger inner room improve rounds loading duly and minimize failure because of jams.

Pros:
  • Orange color follower;
  • The technology of fully automated robotic welding stations: high-level quality control of welding and its dimensions, excluding defects.
Cons:
  • An area, where the ammo is loaded and unloaded, is sharp and tends to snag;
  • There is a risk of nicking the spring;
  • It seems the rounds just crimp in the magazine, stopping the follower from loading full capacity;
  • The follower is made of some type of ABS plastic thin as paper;
  • Can be dangerous: a large chunk broke off the magazine bottom, sending the spring flying out.

#8 D&H INDUSTRIES AR-15 300 BLACKOUT Magazines

D&H INDUSTRIES AR-15 300 BLACKOUT Magazines

Specification

Material: Steel
Magazine Capacity: 10/20/30 Round
Caliber: .300 AAC Blackout

AR-15 magazine is crafted for a .300 Blackout cartridge. D&H designed magazines of an aluminum casing with a black finish and a red magazine follower. There are available 3 models, depending on the magazine capacity: in 10, 20, and 30 rounds.

Pros:
  • Lightweight;
  • Made in the U.S.A.;
  • Lifetime guarantee.
Cons:
  • Poor construction;
  • PSA build doesn’t feed the rounds into a chamber;
  • Non-quality magazines;
  • The follower is on the wrong side;
  • Doesn’t lock the bolt back on the last round every time.

#9 Duramag SS AR-15 300 Blackout Magazine

Duramag SS AR-15 300BLK

Specification

Color: Matte Black/Orange
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

Duramag developed innovative proprietary coatings for magazines, containing Black-T with a good molecular attachment that greatly diminishes friction coefficient, giving smooth operation due to constant lubricity. This Stainless-Steel rifle magazine crimped from 30 Rounds to lower capacities. Sturdy CPD magazines body made of heat treatment and 400-series stainless steel combination, equipped with a bigger inner room and a new snap on the anti-tilt follower for duly rounds loading and jams excluding.

Pros:
  • The follower of orange color;
  • Stainless Steel Advanced Proprietary Coatings;
  • Robotic welding stations: quality control of welding without defects.
Cons:
  • Unsupportive customer service;
  • These magazines are not 5/30 crimped, as advertised.

#BONUS 1: MagPump .223/5.56 AR-15 Magazine Loader, without MagDump MP-AR15-2

MagPump .223/5.56 AR-15 Magazine Loader, without MagDump MP-AR15-2

MagPump AR-15 Magazine Loader is suitable with such calibers as: .300 AAC Blackout, .223 Remington, 5.56x45mm NATO, and compatible with all Mil-Spec AR-15 mags. This 90-round capacity hopper-fed is made of lightweight and reinforced polymer, it can be attached to any Picatinny rail or Weaver and orient ammo in any direction. MagPump developed built-in safeties to prevent round damage while loading and after stopping loading when mags are full. Before loading, make sure that the mags are securely inserted and not bolted to your reloading bench.

Pros:
  • No more rounds popping out while loading;
  • No hand fatigue: fully magazines loading needs much less physical strength, effort and twice less time;
  • Relatively compact unit;
  • No need to use stripper clips;
  • This Speed Loader operates exactly as advertised;
  • No need to freeze fingertips while loading rounds in the winter;
  • Loaded mag saves time at home and the range;
  • The loader is so simple in use;
  • No more rounds popping out while loading.
Cons:
  • Can jam, if load too fast;
  • Necessary to keep count toward the end of the hopper, otherwise have no way to know the loaded quantity.

#BONUS 2: Jagemann Munition Components .300 AAC Blackout Rifle Brass

Jagemann Munition Components .300 AAC Blackout Rifle Brass

.30 caliber rounds, used in magazines to the AR platform, have the peculiarity of minimal recoil, still retaining the punch. Jagemann Munition Components presents a compact .30 caliber solution for .300 AAC Blackout Rifles, with 100 Piece quantity, made of brass.

Pros:
  • Capable of supersonic and subsonic performance;
  • Due to their variety, .30 caliber rounds are popular among sportsmen and medium-sized game hunters.
Cons:
  • None yet.

#BONUS 3: Radical Firearms 10.5 in .300 AAC Blackout Upper Assembly

Radical Firearms 10.5 in .300 AAC Blackout Upper Assembly

.300 AAC Blackout Upper Assembly, designed to be installed to any Mil-Spec AR-15 lower receiver, consists of a flat top, forged upper drop-in receiver with forward assist, shell deflector, barrel nut, ejection port door, 10.5-in barrel (HBAR), A2 flash hider, and low-profile micro gas block. Radical Firearms offers 5 models of upper assemblies for .300 AAC Blackout: for gun rail types: M-LOK, KeyMod, and Quad Rail with an anodized or matte finish.

Pros:
  • Fit and finish are solid and quality;
  • 4140V Chrome Moly;
  • Well-built and functions flawlessly;
  • 1 in 8-inch twist rate;
  • Integral Keymod and Picatinny Rail to mount lasers, lights, and sights.
Cons:
  • None yet.

FAQ

Is it OK to keep gun magazines loaded?
It is possible to keep gun mags loaded. It depends on magazine and ammunition quality, as well as maintenance. Although, the spring can wear out, either when frequently loading /unloading the magazine or long leaving it loaded to full capacity. While storing the loaded magazines, the main thing is for how long: if they are kept for more than 4 months, it will cause a slow loss of some amount of spring tension over time.
How many rounds can you have in a 300 blackout magazine?
300 Blackout (or the second name of this cartridge is 300 AAC) mags are designed for 30 round capacity, the best number for the AR platform.
Are 40 round magazines legal?
42 states do not ban or regulate any magazine capacity. The standard mags capacity of modern sporting rifles is 30 rounds. Although there is the Federal Assault Weapons Bans (1993), limiting the number of magazine rounds (to 10 or less) in some states, for example, in California.

Conclusion

MAGPUL and Lancer are the best-rated .300 Blackout magazines’ manufacturers, having more positive reviews than other ones from the list above. If you live in the states, where the magazine capacity is limited, you can choose models chambered for 5 or 10 rounds cartridges. 300 Blackout magazines can be made of aluminum or stainless steel, the last material makes the casing stronger, but a little heavier. Among convenient features are transparent windows to control the mags fullness and pen dot matrix to do ID marking. If you want to save your time and effort for mags loading, you can buy the hopper-fed as well. This tool for loading high-capacity magazines allows you to be prepared for a full day at the range.

Best pick

MAGPUL – AR-15 30RD PMAG GEN M3 WINDOW Magazine. It is a refined polymer-molded magazine, purpose-built for the AR-15/M16/M4 platform, representing the 3d-generation of PMAG, improving its versatility, strength, and reliability. This magazine has extra reinforced feed lip and mag catch areas.

Tags: 300 blackout magazine, lancer 300 blackout magazine, magpul 300 blackout magazine, 300 blackout magazine bands, 300 blackout magazine fde, .300 blackout magazine, ruger american 300 blackout magazine, 300 blackout magazine stencil, magazine for 300 blackout

#Best #300 Blackout #Magazine #Review #Magazines #Magpul #Bands #Stencil #Ruger #American #Sale #Lancer #Price

Tatiana Kursakova
Tatiana Kursakova
Professional shooter, traveller, survivalist
My love of guns is in my blood, since childhood I have spent hours enjoying the beauty of guns and adored going through their parts.

Tactical accessories are another passion of mine that I could write about endlessly - my house and garage are full of tactical gadgets, luckily my family shares my interests.

I'm infatuated with traveling that's why work at one place with a daily routine and standard schedule is not for me. I prefer copywriting and English tutoring as a freelancer. I live in a male family among constant talks about cars, guns, hunting, fishing, and, of course, dinosaurs 😊.

My husband is an obsessed hunter, and my two sons are fans of «Demolition Ranch» of YouTube blogger Matt Carriker. They are my best consultants about weapon and all-around ammunition topics. All together we share a love for adventures. Every camping or mounting hiking trip is a "small survival", giving irreplaceable experiences. Nothing can be better than the satisfaction of observing wild nature.

Motto: «Born in Ukraine, made is the USA».

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