Davidson Defense Corestrike 8.5-inch Pistol-Gas 1:8 .300 BLK AR-15 Freefloat Tubular M-Lok Handguard Pistol Full Build Kit, SBR Ready

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

The Davidson Defense Corestrike is an AR-15 pistol full build kit chambered in .300 Blackout with an 8.5-inch heavy profile barrel, offered in an SBR Ready configuration. The kit includes the upper assembly, bolt carrier group, charging handle, mil-spec heavy-duty 6-position buffer tube, 3 oz carbine buffer, carbine recoil spring, mil-spec receiver end plate, lower parts kit, and all associated buffer system hardware. This kit ships without a brace. 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
• 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
• GI birdcage flash hider, 5-in-8x24 thread pitch
• Mil-spec heavy-duty 6-position buffer tube
• 3 oz carbine buffer and carbine recoil spring
• Mil-spec receiver end plate
• SBR Ready configuration

Perfect For

• AR-15 pistol builders sourcing a complete SBR Ready kit around an 8.5-inch .300 Blackout upper
• Builders completing a stripped mil-spec AR-15 lower receiver
• Shooters selecting their own brace or stock configuration
• Builders running a freefloat tubular M-Lok handguard on a .300 Blackout 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 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 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.

SBR Ready Configuration

This kit ships without a brace and is intended for builders selecting their own final rear end configuration. The mil-spec heavy-duty 6-position buffer tube, 3 oz carbine buffer, carbine recoil spring, mil-spec receiver end plate, and lower parts kit are all included to support the lower completion build. The SBR Ready designation means the brace selection is left to the builder, allowing for a custom setup based on individual configuration requirements.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. Ships without a brace. Do not install a stock unless compliant with applicable laws.