.300 Blackout AR-15 Parts - Barrels, Muzzle Brakes, and More
If you’re looking for a harder-hitting cartridge for your AR-15, .300 Blackout is the go-to. This was designed to have performance similar to 7.62×39, without needing a bunch proprietary parts. READ MORE
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- Muzzle Devices - .300 Blackout (47)
- Bolt Carrier Groups - 300 Blackout (24)
- Magazines - .300 Blackout (20)
- Barrels - .300 Blackout (16)
- Lower Receivers - .300 Blackout (10)
- Uppers & Parts - .300 Blackout (5)
- Buffer Tube Parts - .300 Blackout (5)
- Triggers - .300 Blackout (4)
- AR-15 Build Kits and Assemblies - .300 Blackout (3)
- Complete Uppers - .300 Blackout (3)
- Charging Handles - 300 Blackout (2)
- Lower Receiver Parts - .300 Blackout (1)
- All Other Products - .300 Blackout (1)
- Tools & Cleaning - .300 Blackout (1)
Brand
Color
- Black - .300 Blackout (63)
- .300 Blackout - OD Green (14)
- Flat Dark Earth - 300 Blackout (11)
- Stainless - .300 Blackout (8)
- Gray - .300 Blackout (8)
- Pink - .300 Blackout (5)
- Tan - .300 Blackout (5)
- Red - .300 Blackout (3)
- Burnt Bronze - .300 Blackout (3)
- Titanium - .300 Blackout (3)
- Tungsten - .300 Blackout (3)
- Translucent Smoke - .300 Blackout (2)
- Blue - .300 Blackout (1)
- Ranger Green - .300 Blackout (1)
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AT3™
AT3™ Black Nitride 5.56 Bolt Carrier Group with Breek Arms Warhammer AR-15 Charging Handle
AT3 Black Nitride BCG + Breek Warhammer AR-15 Charging Handle The AT3 Tactical BCG and Breek Warhammer Charging Handle pair perfectly to complete your AR-15 upper receiver. Save on this...8 Options -
Magpul Cerakote 30 Round PMAGs – FDE, ODG, and Pink Coated by AT3
Flat Dark Earth PMAGs and More - Cerakote by AT3 Our customers have been asking for years about Magpul Flat Dark Earth PMAGs, and other colors Magpul discontinued. Now, they're...3 Options -
RECOMMENDED
Armaspec Stealth Recoil Spring (SRS) for AR-15 and AR-10
Reduce Recoil, Wear, and Unwanted Rattling Armaspec's Stealth Recoil Spring™ is one of the best upgrades for your AR15 or AR10 recoil system, and you can feel and hear the...8 Options -
AT3™RECOMMENDED
AT3™ AR-15 Bolt Carrier Group (BCG) – 5.56 NATO/.300 Blackout – Black Nitride
AT3 Tactical is bringing you the best with this Top-Tier Black Nitride Bolt Carrier Group Getting a high quality bolt carrier group (BCG) that runs well in your rifle is... -
Hera H1 Gen 2 10 Round AR-15 Magazine
Hera USA H1 Gen 2 10 Round AR15 Magazine Made in Germany with high-impact grade polymer, the Hera H1 10 round magazine is a reliable choice to carry your ammo....3 Options -
Mission First Tactical Extreme Duty 30-Round AR 15 Magazine – .223 / 5.56 NATO...
Designed for Ergonomics and Maximum Reliability Mission First Tactical Offers a new and improved polymer in their Extreme Duty Polymer Magazine. Next-generation long glass fiber polymer is used in a...2 Options -
Magpul PMAG M3 30 Round Magazine 300BLK – MAG800-BLK
Purpose-Designed Magazine For Rifles Chambered In 300 Blackout The Magpul PMAG M3 300BLK is a next-generation 30-round magazine chambered in 300 AAC Blackout for AR15/M4 compatible weapons. Along with an... -
Duramag Speed AR-15 20 Round Aluminum Magazine – .223/5.56 NATO
20 Round Curved Duramag with Anti-Tilt Follower The Duramag Speed 20 Round Aluminum Magazines follow the curve of full 30 round magazines. This allows these compact magazines to use full...9 Options -
Backup Tactical Rifle Thread Protector – Honeycomb – Black
Backup Tactical Honeycomb Rifle Thread Protectors Add sleek protection to your modern sporting rifle with Backup Tactical’s honeycomb thread caps. CNC machined from durable aluminum, these covers shield exposed muzzle...2 Options2 Options2 Options -
Backup Tactical Rifle Thread Protector – Frag – Black
Tactical Thread Protectors - Backup Frag Caps When gearing up your modern sporting rifle or AR platform, finish strong with Backup Tactical’s iconic frag thread protectors. Precision CNC machined from...2 Options2 Options2 Options -
Hera H3 Gen 2 30 Round AR-15 Magazine
Hera H3 Gen 2 30 Round AR-15 Magazine Made in Germany with high-impact grade polymer, the Hera H3 30 round magazine is a reliable choice to carry your ammo. Compatible...3 Options -
Backup Tactical 30 Cal Rifle Thread Protector – Hash – Multiple colors
Hash Mark .30 Cal Thread Protectors Give your big bore rifle a tactically aggressive look with Backup Tactical's hash mark thread protectors. CNC machined from durable aluminum, these 5/8x24 caps...2 Options2 Options2 Options -
Lancer L5 Advanced Warfighter 30 Round .300 BLK AR-15 Magazine
.300 Blackout Polymer and Steel Hybrid Magazine Lancer's .300 Blackout specific L5AWM magazine features optimized internal geometry to feed a .30 caliber cartridge. The hardened steel feed lips wrap around... -
Armaspec Sound Mitigation Buffer (SMB) Captured Gen 3 – Multiple Buffer Weights Available
Improved & Easy-To-Install Captive Buffer Weights For AR Builds The Armaspec Sound Mitigation Buffer (SMB) Captured Gen 3 is a quick and easy replacement for your standard buffer and spring....6 Options -
Magpul PMAG M3 20 Round Magazine – .300 BLK – MAG1182
Highly Reliable 20-Round Magazine Designed Specifically for 300 BLK Rifles The Magpul PMAG M3 20 Round - MAG1182 is a dedicated and highly reliable polymer magazine designed specifically for rifles... -
Mission First Tactical 30 Round AR 15 Magazine
Standard Capacity Magazine - 30 Rounds in Black or FDE 30 round 5.56 NATO magazine engineered as an enhancement of the standard STANAG design. The MFT stipple texture, low profile...2 Options -
Amend2 30 Round .223 Rem/5.56 NATO Magazine for AR15
Standard Capacity Magazine from Amend2 - 4 Colors Available The Amend2 30 round magazine is a sturdy, reliable 5.56x45 NATO (.223 Remington) AR15/M4/M16 magazine made of advance polymer material. It...5 Options -
AT3™
AT3™ 5/8 Inch Crush Washer for .308/7.62 Muzzle Devices
Ensure Proper Timing on Your .30 Caliber Muzzle Device Crush washers are essential to replace after removing for replacing a muzzle device. Re-using crush washers can lead to muzzle devices... -
Duramag AR-15 Stainless Steel Magazine 10 Round – .223/5.56/300BLK
An Extremely Durable And Reliable Magazine Way Better than Aluminum And Polymer The Duramag AR-15 Stainless Steel Magazine – .223/5.56/300BLK is designed for performance and durability and crafted exclusively for... -
AT3™
AT3™ .300 BLK/.308 WIN Birdcage Flash Hider with Crush Washer
Classic Birdcage Flash Hider, Sized up for .30 Caliber Limits muzzle flash for effective use in all light conditions. This device is threaded 5/8x24 for applications on .300 Blackout AR15s... -
Duramag AR-15 Stainless Steel Magazine 30 Round – .223/5.56/300BLK
An Extremely Durable And Reliable Magazine Way Better than Aluminum And Polymer The Duramag AR-15 Stainless Steel Magazine – .223/5.56/300BLK is designed for performance and durability and crafted exclusively for... -
Hera H2 Gen 2 20 Round AR-15 Magazine
Hera H2 Gen 2 20 Round AR-15 Magazine Made in Germany with high-impact grade polymer, the Hera H2 20 round magazine is a reliable choice to carry your ammo. Compatible...3 Options3 Options3 Options -
AT3™
AT3™ AR-15 Replacement Bolt – 5.56 NATO/.300 Blackout – Black Nitride
AT3 Replacement AR-15 Bolt This AR-15 replacement bolt from AT3 Tactical easily replaces a broken bolt in your rifle. This bolt comes complete with extractor and ejector assemblies already installed... -
Lancer L5 Advanced Warfighter 20 Round .300 BLK AR-15 Magazine
20 Round .300 Blackout Magazine for Subsonic Rounds This 20 round .300 Blackout specific magazine alleviates issues with stacking and feeding of 200+ grain subsonic rounds. The enlarged body allows...2 Options
If you’re looking for a harder-hitting cartridge for your AR-15, .300 Blackout is the go-to. This was designed to have performance similar to 7.62×39, without needing a bunch proprietary parts.
You can use the same bolt carrier group and magazines as your traditional AR-15 – the only real difference is a barrel for the .30 caliber bullet. Beyond that, you can use all your favorite AR receivers and accessories to shoot this caliber.
.300 Blackout also suppresses rounds beautifully, and is ideal to be used for a short barreled-build.
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