Davidson Defense Suppressor Ready Aegis 7.5" 45ACP AR-45 Pistol Build Kit, M-Lok, w/ Gauntlet Arms Brace

Suppressor Ready Aegis w/Gauntlet Arms Brace 7.5-inch .45 ACP AR-45 Full Build Kit

The Aegis w/Gauntlet Arms Brace is built around a 7.5-inch Bear Creek Arsenal barrel chambered in .45 ACP, with an M4 contour finished in Parkerized. It's paired with a 6061 pistol-caliber AR-15 billet upper receiver finished in black. It pairs a 7-inch ultra-lightweight minimalist M-LOK handguard with a Hughes Precision thread adapter, giving this build a Suppressor Ready configuration since no muzzle device is installed on that threading. It runs on a blowback operating system. A PCC bolt assembly for .45 ACP, Mil-Spec charging handle, complete Lower Parts Kit, pistol-caliber buffer-system components, and a Gauntlet Arms polymer stabilizing brace round out the rest of the build. The lower receiver is not included, leaving the buyer to select and supply that component separately.

Key Features

• Bear Creek Arsenal 7.5-inch .45 ACP barrel, 1:16 twist, M4 contour
• Blowback operating system
• 6061 pistol-caliber AR-15 billet upper receiver, black finish
• 7-inch ultra-lightweight minimalist M-LOK handguard
• Hughes Precision thread adapter, Suppressor Ready; no muzzle device included
• Gauntlet Arms polymer stabilizing brace included
• Complete Mil-Spec Lower Parts Kit and pistol-caliber buffer-system components included
• Lower receiver is not included.

Barrel and Thread Adapter

The barrel is 7.5 inches long, chambered in .45 ACP and built from 4150 chrome moly vanadium steel with a Parkerized finish and M4 contour. It carries a 1:16 twist rate and a .578x28 muzzle thread, cycling on a blowback system. A Hughes Precision thread adapter is fitted at the muzzle, stepping the .578x28 RH female input thread down to a 5/8x24 RH male output thread, with no muzzle device installed on that final threading.

Upper Receiver and Handguard

The upper receiver is a 6061 billet unit built for the pistol-caliber AR-15 platform, finished in black. Over the barrel sits a 7-inch ultra-lightweight minimalist handguard finished in black, using an M-LOK attachment system along its length. This handguard does not include anti-rotation tabs.

Suppressor Ready

The Hughes Precision thread adapter converts this barrel's .578x28 RH threading to a 5/8x24 RH output, and no muzzle device is installed on that output threading, which is what makes this build Suppressor Ready. The bare threaded end leaves that output open for the buyer's own suppressor mounting solution.

Bolt Assembly and Charging Handle

The bolt assembly is a PCC AR unit built specifically for .45 ACP. A Mil-Spec AR-15 M4 charging handle rounds out the upper's operating components.

Lower Parts Kit and Buffer System

A complete Mil-Spec AR-15 Lower Parts Kit covers the fire-control and lower-control internals needed once a lower receiver is on hand. Behind it sits a heavy-duty pistol buffer tube compatible with AR-15 and AR-style pistols, holding a stainless steel AR 9mm buffer and a standard USA-made recoil spring. Buffer end-cap color may vary.

Stabilizing Brace

Capping off the rear of the build is a Gauntlet Arms polymer stabilizing brace finished in black. It mounts directly to the pistol buffer tube included with this kit, built specifically for pistol-configured AR platforms like this .45 ACP build.

Follow all manufacturer instructions and safe handling practices.

Ensure compliance with all applicable federal, state, and local laws.

Verify suppressor and mounting-system compatibility before use.

Lower receiver is not included.