Davidson Defense 45ACP AR-45 Tubular Pistol Full Build Kit w/ SBA3 Brace + Witt Machine Freakin45

45 ACP AR-45 Pistol Full Build Kit with SBA3 Brace and Witt Machine Suppressor

This is a complete .45 ACP pistol kit built around a 5-inch barrel with a free-float handguard, SBA3 stabilizing brace, and Witt Machine suppressor included. Every component is mil-spec or equivalent quality, designed for reliable blowback operation in a compact pistol platform. The kit ships ready to pair with a stripped lower receiver.

Key Features

• 5-inch .45 ACP barrel with 1:16 twist rate, 4150 CrMoV steel, parkerized finish
• 6061 billet upper receiver machined for pistol caliber blowback operation
• 7-inch free-float handguard for consistent sight radius and accessory mounting
• Witt Machine Freakin45 suppressor, 4 inches long, graphite black cerakote
• SB Tactical SBA3 adjustable pistol stabilizing brace, black
• PCC-specific bolt assembly tuned for .45 ACP cycling
• Complete mil-spec lower parts kit with standard carbine buffer system
• Hughes Precision thread adapter for suppressor mounting compatibility

Perfect For

• Shooters building a compact .45 ACP pistol platform
• Users wanting a suppressor-ready setup without additional purchases
• Builders who prefer free-float accuracy and modular mounting
• Those seeking a complete kit minus only the serialized lower receiver

Blowback Operation and Compact Design

This kit uses blowback operation, which means the bolt cycles directly from firing pressure without a gas tube or piston. For a .45 ACP pistol, blowback is standard and reliable. The 5-inch barrel paired with the 7-inch handguard creates a balanced sight radius while keeping overall length compact. The free-float handguard eliminates contact with the barrel, improving consistency shot to shot.

Suppressor Ready with Included Witt Machine Freakin45

The Witt Machine Freakin45 is included and ready to mount. It measures 4 inches long and uses a 5/8x24 thread pitch. The kit includes a Hughes Precision thread adapter to match the barrel's 37/64x28 threads to the suppressor's requirements. This adapter ensures secure mounting without additional purchases or compatibility concerns.

SBA3 Brace and Buffer System Configuration

The SBA3 adjustable pistol stabilizing brace is included and ships attached to the mil-spec buffer tube. The buffer system uses a standard 8 oz. 9mm buffer and carbine-length recoil spring, both mil-spec quality. This combination is tuned for .45 ACP blowback cycling and provides reliable operation across standard and +P ammunition.

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