Davidson Defense 'Mockingbird Gen 3' 6-inch AR-15 9mm Nitride Pistol Full Build Kit

'Mockingbird Gen 3' 6-Inch AR-15 9mm Nitride Pistol Full Build Kit

The Mockingbird Gen 3 Full Build Kit is built around a 6-inch 9mm medium profile barrel with a Davidson Defense 9mm billet upper receiver, a 4-inch Air Lite Series honeycomb free-float M-LOK handguard, and a complete BCG, charging handle, and KAK Industries Shockwave Blade pistol brace. Lower receiver is not included.

Key Features

• 6-inch 9mm barrel, medium profile, 4150 CrMoV steel, 1:10 twist, Nitride finish
• Davidson Defense 9mm billet upper receiver, 6061 aluminum
• 4-inch Air Lite Series honeycomb free-float M-LOK handguard with monolithic Picatinny top rail
• Omega Manufacturing A2 Birdcage flash hider, rated for 5.56/.223/9mm/.350, on 1/2x28 threads with 1/2-inch black crush washer
• Nitride-finished 9mm BCG, compatible with Glock and Colt magazines, and mil-spec quality M4 charging handle included
• Complete mil-spec AR-15 Lower Parts Kit and buffer-system components included
• KAK Industries Shockwave Blade pistol brace in black included
• Lower receiver is not included.

Barrel and Muzzle Device

The 6-inch barrel is machined from 4150 chrome moly vanadium steel in a medium profile with a Nitride finish and a 1:10 twist suited to 9mm. The muzzle carries the Omega Manufacturing A2 Birdcage flash hider on 1/2x28 threads, rated across 5.56/.223, 9mm, and .350 diameter compatibility, secured with the included 1/2-inch black crush washer.

Upper Receiver and Handguard

The upper receiver is a Davidson Defense 9mm billet unit machined from 6061 aluminum. It's paired with a 4-inch Air Lite Series honeycomb free-float M-LOK handguard finished in black anodizing, featuring a monolithic Picatinny top rail.

Bolt Carrier Group and Charging Handle

The included bolt carrier group is finished in Nitride and built for compatibility with Glock and Colt pattern magazines, featuring an external extractor. A mil-spec quality AR-15 M4 charging handle is included alongside it.

Lower Parts Kit and Buffer System

The kit includes a complete mil-spec AR-15 Lower Parts Kit with a mil-spec style pistol grip, along with the carbine castle nut and mil-spec receiver end plate. The buffer system pairs a KAK Industries AR-15 9mm carbine buffer with a standard AR-15 carbine recoil spring, cycling inside an AR-15 pistol buffer tube.

Brace

A KAK Industries Shockwave Blade pistol brace in black is included, mounted to the pistol buffer tube used in this build.

Follow all manufacturer instructions and safe handling practices.

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