Davidson Defense Suppressor Ready Thornfield w/Gauntlet Arms Brace 5-inch 1:16 45ACP AR-45 Freefloat M-Lok Handguard Pistol Full Build Kit

Suppressor Ready Thornfield w-Gauntlet Arms Brace 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 5-inch slim profile 4150 Chrome Moly Vanadium steel barrel with a Parkerized finish, a 1-16 twist rate, and a direct blowback system with no gas tube or gas block. The barrel is threaded at 37-64x28 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 billet aluminum AR-15 pistol caliber upper receiver anchors the front end. The 4.2-inch freefloat M-LOK handguard in black 7075-T6 aluminum with an integrated hand stop covers the compact 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 with a Mil-Spec single-stage trigger, Mil-Spec safety selector, standard Mil-Spec magazine catch, bolt catch, pivot pin, and takedown pins, along with an A2 style black textured polymer pistol grip, a heavy-duty black anodized aluminum pistol buffer tube for AR-15 and AR style pistols, an 8 oz. black PCC buffer, a standard AR-15 carbine recoil spring made in the USA, a Mil-Spec AR-15 and M16 receiver end plate, and an AR-15 carbine castle nut. A Gauntlet Arms black reinforced polymer stabilizing brace with a fixed profile closes out the rear end. Lower receiver not included.

Key Features

• .45 ACP chambering, 5-inch slim profile 4150 Chrome Moly Vanadium steel barrel, Parkerized finish
• 1-16 twist rate, 37-64x28 thread pitch
• Hughes Precision thread adapter, .578x28 RH female to 5-8x24 RH male, included
• Direct blowback operation, no gas tube or gas block
• Billet aluminum AR-15 pistol caliber upper receiver
• 4.2-inch freefloat M-LOK handguard, 7075-T6 aluminum, black, integrated hand stop
• PCC AR bolt assembly, .45 ACP compatible
• Mil-Spec AR-15 M4 charging handle
• Complete Mil-Spec AR-15 lower parts kit with Mil-Spec single-stage trigger, Mil-Spec safety selector, standard Mil-Spec magazine catch, bolt catch, pivot pin, and takedown pins, A2 style black textured polymer pistol grip
• Heavy-duty pistol buffer tube, aluminum, black anodized, AR-15 and AR style pistol compatible
• 8 oz. PCC buffer, black
• Standard AR-15 carbine recoil spring, made in the USA
• Mil-Spec AR-15 and M16 receiver end plate
• AR-15 carbine castle nut
• Gauntlet Arms polymer stabilizing brace, black, reinforced polymer, fixed, 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 suppressor-ready .45 ACP AR-45 pistol component set with a compact freefloat M-LOK handguard with integrated hand stop and Hughes Precision thread adapter covered in one kit

Upper Assembly

The billet aluminum AR-15 pistol caliber upper receiver forms the core of the front end for the AR-45 platform. The 5-inch slim profile 4150 Chrome Moly Vanadium steel barrel brings a Parkerized finish and a 1-16 twist rate to the .45 ACP chamber, threaded at 37-64x28. The included Hughes Precision thread adapter converts the 37-64x28 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 4.2-inch freefloat M-LOK handguard in black 7075-T6 aluminum surrounds the barrel along the compact forend with M-LOK slots along the handguard surfaces for accessory attachment and an integrated hand stop built directly into 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 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 Mil-Spec single-stage trigger, Mil-Spec safety selector, standard Mil-Spec magazine catch, bolt catch, pivot pin, and takedown pins, with an A2 style black textured polymer pistol grip covering the grip interface. The heavy-duty black anodized aluminum pistol buffer tube, 8 oz. black PCC buffer, and standard AR-15 carbine recoil spring made in the USA 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 AR-15 carbine castle nut lock the buffer tube down cleanly at the rear of the lower receiver. The Gauntlet Arms black reinforced polymer stabilizing brace fits over the pistol buffer tube and closes out the rear end of the build with a fixed profile.

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.