Davidson Defense Blemished Reachback 8.5-inch Pistol-Gas 1:9 .300 BLK AR-15 Freefloat M-Lok Handguard Pistol Full Build Kit, SBR Ready

Blem Reachback 8.5-Inch .300 BLK AR-15 Pistol Full Build Kit, SBR Ready

This SBR Ready full build kit combines an 8.5-inch Bear Creek Arsenal 4150 Chrome Moly Vanadium barrel with a blemished 7-inch freefloat M-Lok handguard, chambered in .300 Blackout. The kit includes an anodized 7075-T6 aluminum upper receiver with M4 feed ramps, micro low-profile gas block, pistol-length gas system, GI birdcage flash hider, mil-spec charging handle, 5.56x45mm QPQ nitride bolt carrier group, mil-spec heavy-duty 6-position buffer tube, buffer, carbine recoil spring, castle nut, end plate, and complete mil-spec lower parts kit. This is a blemished handguard with cosmetic imperfections that do not affect function. Ships without a brace. Lower receiver not included.

Key Features

• SBR Ready configuration, ships without a brace
• Blem handguard, cosmetic imperfections do not affect function
• 8.5-inch Bear Creek Arsenal heavy barrel, 4150 Chrome Moly Vanadium with parkerized finish, 1:8 twist rate
• Blem 7-inch freefloat M-Lok handguard, cosmetic finish irregularities, full functionality preserved
• Anodized AR-15 upper receiver with M4 feed ramps, 7075-T6 aluminum
• Pistol-length gas system with .750 micro low-profile gas block
• 5.56x45mm QPQ nitride bolt carrier group, 9310 alloy steel
• Mil-spec heavy-duty 6-position buffer tube with buffer, carbine recoil spring, castle nut, and end plate
• 5/8x24 threaded barrel with manganese phosphate GI birdcage flash hider
• Complete mil-spec AR-15 lower parts kit

Perfect For

• SBR builds requiring complete component sets without a brace
• Budget-conscious shooters selecting their own brace or stock configuration
• Builders seeking Bear Creek Arsenal heavy profile barrels with .300 Blackout chambering
• Configurations demanding freefloat M-Lok handguards with complete lower parts

SBR Ready Configuration

This kit ships without a brace, intended for customers selecting their own final setup. The included mil-spec heavy-duty 6-position buffer tube, buffer, carbine recoil spring, castle nut, and end plate accommodate brace or stock attachment based on your chosen configuration.

Blem Handguard Value

This kit features a blemished 7-inch freefloat M-Lok handguard with minor cosmetic imperfections such as finish irregularities or surface marks. These blemishes do not affect structural integrity, M-Lok slot functionality, or barrel freefloat performance. The blem designation provides significant value for builders focused on function.

.300 Blackout Chambering

.300 Blackout provides versatility across subsonic and supersonic ammunition in a compact platform. The caliber delivers effective terminal performance at close to intermediate ranges while maintaining compatibility with standard AR-15 lower receivers and magazines.

QPQ Nitride Bolt Carrier Group

The 5.56x45mm bolt carrier group features QPQ nitride finish over 9310 alloy steel. The nitride treatment provides corrosion resistance and surface hardness while reducing friction. This BCG is compatible with .300 Blackout chambering.

Compatibility and Assembly

This full build kit is compatible with mil-spec AR-15 lower receivers. All components use standard AR-15 specifications and threading, including the 5/8x24 TPI muzzle threads matching the included GI birdcage flash hider.

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