Davidson Defense Corestrike w/Magpul BTR Brace 8.5-inch Pistol-Gas 1:8 .300 BLK AR-15 Freefloat Tubular M-Lok Handguard Pistol Full Build Kit

Davidson Defense Corestrike AR-15 Pistol Full Build Kit with Magpul BTR Brace - 8.5-inch .300 Blackout Pistol-Gas 1:8 Freefloat Tubular M-Lok Handguard

The Davidson Defense Corestrike with Magpul BTR Brace is an AR-15 pistol full build kit chambered in .300 Blackout with an 8.5-inch heavy profile barrel. The kit includes the upper assembly, bolt carrier group, charging handle, Magpul BTR polymer pistol brace, mil-spec heavy-duty 6-position aluminum buffer tube, 3 oz carbine buffer, carbine recoil spring made in the USA, mil-spec receiver end plate, AR-15 carbine castle nut, lower parts kit, and all associated buffer system hardware. The lower receiver is not included.

Key Features

• 8.5-inch 4150 Chrome Moly Vanadium steel heavy profile barrel
• Parkerized barrel finish
• 1:8 twist rate
• 5-in-8x24 thread pitch
• Pistol-length gas system with .750 O.D. steel micro low-profile gas block
• 6061-T6 aluminum slick side billet upper receiver, USA made, with anti-rotation cutout
• Type 3 Class 2 hardcoat anodized upper receiver finish
• 7-inch freefloat tubular M-Lok handguard in aluminum
• Complete bolt carrier group in 9310 alloy steel, nitride finish, made in the USA
• Mil-spec M4 charging handle
• Omega Manufacturing GI birdcage flash hider, 5-in-8x24 thread pitch
• Magpul BTR polymer pistol brace in black
• Mil-spec heavy-duty 6-position aluminum buffer tube
• 3 oz carbine buffer and carbine recoil spring, made in the USA
• Mil-spec receiver end plate and AR-15 carbine castle nut

Perfect For

• AR-15 pistol builders sourcing a complete kit around an 8.5-inch .300 Blackout upper
• Builders completing a stripped mil-spec AR-15 lower receiver
• Shooters running a freefloat tubular M-Lok handguard on a .300 Blackout pistol build
• Builders adding a Magpul BTR brace to an AR-15 pistol build

Barrel and Gas System

The 8.5-inch heavy profile barrel is 4150 Chrome Moly Vanadium steel with a Parkerized finish and a 1:8 twist rate suited for both subsonic and supersonic .300 Blackout loads. The muzzle is threaded at 5-in-8x24 and pairs with the included Omega Manufacturing GI birdcage flash hider. The pistol-length gas system uses a .750 O.D. steel micro low-profile gas block, which sits beneath the handguard and keeps the forend profile clean and unobstructed.

Upper Receiver and Handguard

The slick side billet upper receiver is 6061-T6 aluminum with a Type 3 Class 2 hardcoat anodized finish and an anti-rotation cutout, manufactured in the USA. The slick side profile removes the forward assist and ejection port door provisions found on standard upper receivers, giving the build a cleaner exterior profile. The 7-inch freefloat tubular M-Lok handguard is aluminum in black, keeping the forend lightweight and compact with M-Lok accessory slots for lights, grips, and other attachments. The handguard length is shorter than the 8.5-inch barrel, and the muzzle device extends beyond the handguard to provide the necessary clearance.

Bolt Carrier Group and Charging Handle

The included bolt carrier group is a complete AR-15 unit built from 9310 alloy steel with a nitride finish, made in the USA. It is compatible with .300 Blackout, 5.56 NATO, .223 Remington, and .350 Legend configurations. The mil-spec M4 charging handle completes the upper component set.

Magpul BTR Brace and Buffer System

The Magpul BTR polymer pistol brace in black pairs with the included mil-spec heavy-duty 6-position aluminum buffer tube. The 3 oz carbine buffer, carbine recoil spring made in the USA, mil-spec receiver end plate, AR-15 carbine castle nut, lower parts kit, and all associated buffer system hardware cover the core lower completion components outside the serialized lower receiver.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included.