Details
Poker Ace 10.5-Inch AR-15 .300 BLK Pistol Full Build Kit with Gauntlet Arms Brace
The Poker Ace Full Build Kit is built around a 10.5-inch .300 Blackout barrel machined from 4150 chrome moly vanadium steel in an HBAR heavy profile, with a pistol-length gas system and a Phosphate finish. It is paired with a 10-inch black M-LOK handguard machined from 6061-T6 aluminum and a nylon-reinforced polymer stabilizing brace on a pistol buffer tube. The kit ships with a premium complete bolt carrier group, a mil-spec quality M4 charging handle, and a full set of buffer system components. The short, heavy barrel keeps the front end compact and sturdy, and the 1:8 twist suits a wide range of bullet weights in .300 Blackout. Lower receiver is not included. Lower parts kit and pistol grip details were not supplied with this listing.
Key Features
- 10.5-inch HBAR barrel, 4150 CrMoV steel, Phosphate finish, 1:8 twist, .300 Blackout, 5/8x24 muzzle threads
- Pistol-length gas system with a Recoil Technologies micro low-profile gas block sized for a .750-inch barrel
- 7075-T6 aluminum upper receiver with M4 feed ramps, anodized finish
- 10-inch M-LOK handguard, 6061-T6 aluminum, black
- AR-10 .308 A2 birdcage flash hider on 5/8x24 threads
- Premium complete AR-15 5.56 bolt carrier group, 9310 alloy steel carrier, Nitride finish
- Mil-spec quality AR-15 M4 charging handle included
- Pistol buffer tube, castle nut, end plate, recoil spring, and 3 oz. buffer
- Nylon-reinforced polymer stabilizing brace, black
- Lower receiver is not included.
Barrel and Gas System
The 10.5-inch barrel is machined from 4150 chrome moly vanadium steel in an HBAR heavy profile and chambered in .300 Blackout, with a 1:8 twist rate suited to a wide range of bullet weights in this cartridge. It is finished in Phosphate, a matte, corrosion-resistant treatment that gives it a clean, uniform look. The barrel runs a pistol-length gas system through a Recoil Technologies micro low-profile gas block sized for a .750-inch barrel. At the muzzle, 5/8x24 threads carry the included AR-10 .308 A2 birdcage flash hider.
Upper Receiver and Handguard
The upper receiver is machined from 7075-T6 aluminum with M4 feed ramps and an anodized finish, giving it a hard, wear-resistant surface that holds up to regular handling. It is paired with a 10-inch black M-LOK handguard machined from 6061-T6 aluminum. The M-LOK slots give the builder room to mount lights, grips, handstops, and other accessories wherever the setup calls for them.
Bolt Carrier Group and Charging Handle
The included premium AR-15 complete bolt carrier group features a carrier machined from 9310 alloy steel and finished in Nitride, a surface treatment that adds hardness and corrosion resistance and helps the carrier stand up to repeated cycling. It is listed as a 5.56 unit, and its compatibility with .300 Blackout was not supplied with this listing and should be confirmed before purchase. It is paired with a mil-spec quality M4 charging handle, completing the upper so it is ready to be matched with a compatible lower receiver.
Buffer System and Brace
The kit includes a pistol buffer tube, a castle nut, an end plate, a recoil spring, and a 3-ounce buffer. A black stabilizing brace molded from nylon-reinforced polymer mounts to the pistol buffer tube used in this build.
Compatibility
This kit is built for AR-15 lower receivers and .300 Blackout builds. Lower parts kit and pistol grip inclusion, as well as handguard free-float configuration and ejection port door and forward assist configuration, were not supplied with this listing and should be confirmed before purchase.
Follow all manufacturer instructions and safe handling practices.
Ensure compliance with all applicable federal, state, and local laws.
