Davidson Defense Suppressor Ready Bedrock w/SBA3 Brace 8-inch 1:16 45ACP AR-15 Freefloat Tubular Handguard Pistol Full Build Kit

Suppressor Ready Bedrock w-SBA3 Brace 8-Inch 1-16 .45 ACP AR-15 Freefloat Tubular Handguard Pistol Full Build Kit

This is an AR-15 pistol full build kit chambered in .45 ACP, centered on a Gashkin 8-inch heavy PCC profile 4150 CrMoV steel barrel with a QPQ nitride finish, a 1-16 twist rate, and a direct blowback system with no gas tube or gas block. The barrel is threaded at .578x28 and includes a Hughes Precision thread adapter converting from .578x28 RH female to 5-8x24 RH male for standard suppressor and muzzle device compatibility. The 6061 billet aluminum AR-15 pistol caliber upper receiver anchors the front end. The 7-inch freefloat smooth handguard in black anodized finish covers the forend. A PCC AR bolt assembly compatible with .45 ACP and a Mil-Spec M4 charging handle complete the upper side. The lower completion package covers a complete Mil-Spec AR-15 lower parts kit, a Mil-Spec heavy-duty AR-15 6-position carbine receiver extension, an 8 oz. 9mm heavy buffer, a standard AR-15 carbine recoil spring made in the USA, a Mil-Spec AR-15 and M16 receiver end plate, and a Mil-Spec AR-15 carbine castle nut. An SB Tactical SBA3 adjustable pistol stabilizing brace in black lightweight reinforced polymer with a five-position adjustable length of pull and an integral QD sling socket closes out the rear end. Lower receiver not included.

Key Features

• .45 ACP chambering, Gashkin 8-inch heavy PCC profile 4150 CrMoV steel barrel, QPQ nitride finish
• 1-16 twist rate, .578x28 thread pitch
• Hughes Precision thread adapter, .578x28 RH female to 5-8x24 RH male, included
• Direct blowback operation, no gas tube or gas block
• 6061 billet aluminum AR-15 pistol caliber upper receiver
• 7-inch freefloat smooth handguard, black anodized
• PCC AR bolt assembly, .45 ACP compatible
• Mil-Spec AR-15 M4 charging handle
• Complete Mil-Spec AR-15 lower parts kit
• Mil-Spec heavy-duty AR-15 6-position carbine receiver extension
• 8 oz. 9mm heavy buffer
• Standard AR-15 carbine recoil spring, made in the USA
• Mil-Spec AR-15 and M16 receiver end plate
• Mil-Spec AR-15 carbine castle nut
• SB Tactical SBA3 adjustable pistol stabilizing brace, black, lightweight reinforced polymer, five-position adjustable, integral QD sling socket, Mil-Spec carbine receiver extension compatible

Perfect For

• AR-15 pistol builders who need everything above the lower receiver for a .45 ACP build
• Shooters pairing this kit with an existing stripped or complete AR-15 compatible lower receiver
• Builders who want an SBA3 brace and a complete suppressor-ready .45 ACP AR-15 pistol component set with a freefloat tubular handguard and Hughes Precision thread adapter covered in one kit

Upper Assembly

The 6061 billet aluminum AR-15 pistol caliber upper receiver forms the core of the front end for this .45 ACP blowback platform. The Gashkin 8-inch heavy PCC profile 4150 CrMoV steel barrel brings a QPQ nitride finish and a 1-16 twist rate to the .45 ACP chamber, threaded at .578x28. The included Hughes Precision thread adapter converts the .578x28 barrel thread to a 5-8x24 RH male output, allowing standard suppressor and muzzle device options threaded in 5-8x24 RH to thread directly onto this upper. This upper operates on a direct blowback system, meaning there is no gas tube or gas block present or required. The 7-inch freefloat smooth handguard in black anodized finish surrounds the barrel along the forend.

Bolt Carrier Group and Charging Handle

The PCC AR bolt assembly is the platform-correct bolt assembly for the .45 ACP blowback build. The Mil-Spec M4 charging handle pairs with the bolt assembly inside the upper receiver to complete the upper interior and finish the front end of the build.

Lower Completion Components

The complete Mil-Spec AR-15 lower parts kit covers the full internal lower component group, including the fire control group, magazine catch, bolt catch, and all associated pins and springs. The Mil-Spec heavy-duty AR-15 6-position carbine receiver extension, 8 oz. 9mm heavy buffer, and standard AR-15 carbine recoil spring made in the USA form the buffer system at the rear of the lower. The Mil-Spec AR-15 and M16 receiver end plate and Mil-Spec AR-15 carbine castle nut lock the receiver extension down cleanly at the rear of the lower receiver. The SB Tactical SBA3 adjustable pistol stabilizing brace in black lightweight reinforced polymer fits over the Mil-Spec 6-position carbine receiver extension and closes out the rear end with a five-position adjustable length of pull and an integral QD sling socket for quick-detach sling attachment built directly into the brace body.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Verify suppressor compatibility before use. Ensure secure mounting before use. Lower receiver not included.