Davidson Defense Suppressor Ready Ruination w/Gauntlet Arms Brace 7.5-inch 1:16 45ACP AR-45 Freefloat M-Lok Handguard Pistol Full Build Kit

Suppressor Ready Ruination w-Gauntlet Arms Brace 7.5-Inch 1-16 .45 ACP AR-45 Freefloat M-LOK Handguard Pistol Full Build Kit

This is an AR-45 pistol full build kit chambered in .45 ACP, centered on a 7.5-inch M4 contour 4150 CMV steel barrel with a Parkerized finish, a 1-16 twist rate, and a direct blowback system with no gas tube or gas block. The PCC billet AR-15 upper receiver with a black finish anchors the front end. The 7-inch freefloat M-LOK handguard in black aluminum with an integrated hand stop covers the compact forend. The barrel is threaded at .578x28. A PCC AR bolt assembly compatible with .45 ACP and a Mil-Spec AR-15 charging handle complete the upper side. The lower completion package covers a complete Mil-Spec AR-15 lower parts kit, a heavy-duty pistol buffer tube, an 8 oz. 9mm buffer, a standard AR-15 carbine recoil spring, a Mil-Spec AR-15 and M16 receiver end plate, and a Mil-Spec AR-15 carbine castle nut. A Gauntlet Arms black polymer stabilizing brace closes out the rear end. Lower receiver not included.

Key Features

• .45 ACP chambering, 7.5-inch M4 contour 4150 CMV steel barrel, Parkerized finish
• 1-16 twist rate, .578x28 thread pitch
• Direct blowback operation, no gas tube or gas block
• PCC billet AR-15 upper receiver, black
• 7-inch freefloat M-LOK handguard, black aluminum, integrated hand stop
• PCC AR bolt assembly, .45 ACP compatible
• Mil-Spec AR-15 charging handle
• Complete Mil-Spec AR-15 lower parts kit
• Heavy-duty pistol buffer tube
• 9mm buffer, 8 oz.
• Standard AR-15 carbine recoil spring
• Mil-Spec AR-15 and M16 receiver end plate
• Mil-Spec AR-15 carbine castle nut
• Gauntlet Arms polymer stabilizing brace, black, pistol buffer tube compatible

Perfect For

• AR-45 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-45 compatible lower receiver
• Builders who want a Gauntlet Arms brace and a complete .45 ACP AR-45 pistol component set with a freefloat M-LOK handguard with integrated hand stop covered in one kit

Upper Assembly

The PCC billet AR-15 upper receiver with a black finish forms the core of the front end for the AR-45 platform. The 7.5-inch M4 contour 4150 CMV steel barrel brings a Parkerized finish and a 1-16 twist rate to the .45 ACP chamber, threaded at .578x28. This upper operates on a direct blowback system, meaning there is no gas tube or gas block present or required. The 7-inch freefloat M-LOK handguard in black aluminum surrounds the barrel along the compact forend with M-LOK slots for accessory attachment and an integrated hand stop positioned along the handguard body.

Bolt Carrier Group and Charging Handle

The PCC AR bolt assembly is the platform-correct bolt assembly for the .45 ACP AR-45 blowback build. The Mil-Spec AR-15 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 heavy-duty pistol buffer tube, 8 oz. 9mm buffer, and standard AR-15 carbine recoil spring form the buffer system at the rear of the lower, matched to the pistol platform. The Mil-Spec AR-15 and M16 receiver end plate and Mil-Spec AR-15 carbine castle nut lock the buffer tube down cleanly at the rear of the lower receiver. The Gauntlet Arms black polymer stabilizing brace fits over the pistol buffer tube and closes out the rear end of the build with a fixed profile and an integrated sling loop for sling attachment without additional hardware.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included.