Davidson Defense Suppressor Ready Ruination SBR Ready 7.5-inch 1:16 45ACP AR-45 Freefloat M-Lok Handguard Pistol Full Build Kit

Suppressor Ready Ruination SBR Ready 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 Mil-Spec heavy-duty AR-15 6-position 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. This kit ships without a brace, leaving the final rear end setup to the buyer. 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
• Mil-Spec heavy-duty AR-15 6-position 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
• SBR Ready

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 selecting their own brace or stock for a custom .45 ACP AR-45 pistol or SBR platform with a freefloat M-LOK handguard with integrated hand stop already covered

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 Mil-Spec heavy-duty AR-15 6-position buffer tube, 8 oz. 9mm buffer, and standard AR-15 carbine recoil spring 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 buffer tube down cleanly at the rear of the lower receiver. The brace or stock selection is left entirely to the buyer, keeping the final rear end open for a custom setup.

SBR Ready

This kit ships without a brace and is intended for builders selecting their own final rear end setup. The Mil-Spec heavy-duty 6-position buffer tube and complete lower hardware are included, but the brace or stock is sourced separately by the buyer. The final rear end configuration is setup dependent and determined by the component the buyer selects.

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