Davidson Defense Padlock 16-inch Pistol-Gas 1:8 .300 BLK AR-15 Freefloat M-Lok Handguard Rifle Upper Build Kit

Padlock 16-Inch Pistol-Gas 1-8 .300 BLK AR-15 Freefloat M-LOK Handguard Rifle Upper Build Kit

This is an AR-15 upper build kit chambered in .300 AAC Blackout, built around a 16-inch HBAR steel barrel with a phosphate finish, a 1-8 twist rate, and a pistol-length gas system. The 7000 series optimized AR-15 upper receiver with a Type III hardcoat anodized black finish and a dust cover pin retention feature anchors the front end, along with a .223 and 5.56 ejection port door with rod and spring. The pistol-length gas tube and micro low-profile steel gas block at .750 O.D. complete the gas system, and the 15-inch freefloat M-LOK handguard in black covers the forend. A GI Birdcage flash hider in 5-8x24 compatible with .308 Winchester, 7.62x39mm, and .300 AAC Blackout closes out the muzzle end. BCG and charging handle are not included.

Key Features

• .300 AAC Blackout chambering, 16-inch HBAR steel barrel, phosphate finish
• 1-8 twist rate, 5-8x24 thread pitch
• Pistol-length gas system with pistol-length gas tube
• Micro low-profile steel gas block, .750 O.D.
• 7000 series optimized AR-15 upper receiver, Type III hardcoat anodized black, dust cover pin retention feature
• AR-15 .223 and 5.56 ejection port door with rod and spring
• 15-inch freefloat M-LOK handguard, black
• GI Birdcage flash hider, 5-8x24 thread pitch, .308 Winchester, 7.62x39mm, and .300 AAC Blackout compatible
• Black 5-8-inch crush washer

Perfect For

• AR-15 rifle builders sourcing a .300 BLK upper assembly without BCG or charging handle
• Shooters adding a 16-inch pistol-gas .300 BLK upper to an existing lower with a BCG and charging handle on hand
• Builders who want a 7000 series optimized upper receiver and 15-inch freefloat M-LOK handguard in one purpose-built .300 BLK upper kit

Upper Receiver and Barrel

The 7000 series optimized AR-15 upper receiver with a Type III hardcoat anodized black finish anchors the front end with a dust cover pin retention feature and a .223 and 5.56 ejection port door with rod and spring. The 16-inch HBAR steel barrel brings a phosphate finish and a 1-8 twist rate to the .300 AAC Blackout chamber, threaded at 5-8x24. The pistol-length gas tube and micro low-profile steel gas block at .750 O.D. run a pistol-length gas system along the 16-inch barrel. A pistol-length gas system on a 16-inch barrel is a deliberate design choice that gives this upper a slower and longer gas dwell time than a standard pistol-length or carbine-length system at this barrel length, which can have implications for cycling behavior depending on the suppressor or muzzle device setup used. The 15-inch freefloat M-LOK handguard in black surrounds the barrel and gas system along the forend with M-LOK slots along the handguard body for accessory attachment across the full 15-inch length.

Muzzle Device

The GI Birdcage flash hider threads onto the 5-8x24 muzzle end of the barrel and is compatible with .308 Winchester, 7.62x39mm, and .300 AAC Blackout at this thread pitch. The included black 5-8-inch crush washer seats at the barrel shoulder and completes the muzzle hardware for this kit.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. BCG and charging handle are not included.