Always Armed 16" 300 Blackout Rifle Kit – Black Anodized

Build a high-performance AR platform rifle with the Always Armed 16" 300 Blackout Rifle Kit. Precision-engineered in the USA, this complete build kit provides all the premium components needed to assemble a reliable 300 BLK rifle (just add your stripped lower receiver).

Premium Barrel & Forged Upper Receiver

At the heart of this kit is a 16" 4150 steel barrel featuring a 1:8 twist rate and a durable black nitride finish for exceptional corrosion resistance, longevity, and accuracy. The upper receiver is forged from 7075-T6 aluminum, completed with a factory-installed forward assist and dust cover assembly, and paired with a smooth pistol-length gas system under a low-profile .750 gas block.

The 15" Free-Float M-LOK Handguard provides a full-length top Picatinny rail and ample M-LOK attachment slots for grips, lights, and optics. Finished in a matching hardcoat black anodize, this complete kit includes a full Mil-Spec Lower Parts Kit, full-auto profile Bolt Carrier Group (BCG), charging handle, A2 flash hider, carbine buffer tube assembly, and a rifle buttstock for a simple drop-in build.

Key Features

• Chambering & Twist: Chambered in 300 Blackout with a versatile 1:8 twist rate to stabilize both subsonic and supersonic projectiles.

• 4150 Nitride Barrel: 16" heavy-duty steel barrel with a black nitride finish for maximum heat and wear protection.

• Forged 7075-T6 Upper: Mil-spec upper receiver with hardcoat black anodized finish, complete with dust cover and forward assist.

• 15" Free-Float M-LOK Rail: Full-length modular handguard offering superior hand placement options and accessory compatibility.

• Complete Drop-In Build Package: Includes Mil-Spec LPK, Bolt Carrier Group, charging handle, A2 flash hider, carbine buffer assembly, and rifle buttstock.

• Made in the USA: Manufactured to strict quality standards in the United States.

Package Includes

• 1x Assembled 16" 300 Blackout Upper Receiver (7075-T6 Aluminum)
• 1x 15" Free Float M-LOK Handguard
• 1x 16" 4150 Nitride Barrel (Pistol-Length Gas System, .750 Gas Block)
• 1x A2 Flash Hider
• 1x Full-Auto Profile Bolt Carrier Group (BCG)
• 1x Mil-Spec Charging Handle
• 1x Complete Mil-Spec Lower Parts Kit (LPK)
• 1x Carbine Buffer Tube Assembly
• 1x Rifle Buttstock