Details
Davidson Defense Short King Gauntlet Arms Brace 8-inch .45 ACP AR-45 Freefloat M-Lok Pistol Full Build Kit
The Davidson Defense Short King is a .45 ACP AR-45 Full Build Kit built around a compact 8-inch platform. The kit centers on a Gashkin 8-inch medium profile barrel in 4150 Chrome Moly Vanadium with a nitride finish, 1:16 twist rate, and .578x28 thread pitch, paired with a KAK .578-28 Micro Flash Can muzzle device. The upper receiver is a 6061 pistol caliber billet design in 6061-T6 aluminum with a Type 3 Class 2 hardcoat anodized finish, paired with a freefloat M-Lok handguard in aircraft-grade aluminum in black. A PCC AR bolt assembly for .45 ACP with a 9310 alloy steel bolt head and 8620 alloy steel body, nitride finish, and a Mil-Spec AR-15 M4 charging handle complete the upper side. The lower hardware includes a heavy-duty pistol buffer tube, an 8 oz buffer, a recoil spring, an AR-15 M16 Mil-Spec receiver end plate, and a castle nut. The Gauntlet Arms polymer stabilizing brace in black is included. Lower receiver not included.
Key Features
- Gashkin 8-inch medium profile barrel, 4150 Chrome Moly Vanadium, nitride finish, 1:16 twist, .578x28 thread pitch
- KAK .578-28 Micro Flash Can, .45 ACP, .578x28
- 6061 pistol caliber billet upper receiver, 6061-T6 aluminum, Type 3 Class 2 hardcoat anodized
- Freefloat M-Lok handguard, aircraft-grade aluminum, black
- PCC AR bolt assembly, .45 ACP, 9310 alloy steel bolt head, 8620 alloy steel body, nitride finish
- Mil-Spec AR-15 M4 charging handle
- Heavy-duty pistol buffer tube
- 8 oz buffer
- AR-15 M16 Mil-Spec receiver end plate
- Castle nut
- Gauntlet Arms polymer stabilizing brace, black
Perfect For
- Builders sourcing a complete .45 ACP AR-45 pistol kit and pairing it with their own lower receiver
- Shooters building a compact .45 ACP pistol platform with a Gauntlet Arms brace already included
- AR-45 builders who want a Gashkin barrel and PCC bolt assembly covered in one kit
Gashkin Barrel and Muzzle Device
The Gashkin barrel is 8 inches, chambered in .45 ACP, and constructed from 4150 Chrome Moly Vanadium with a nitride finish. The twist rate is 1:16 and the thread pitch is .578x28, which matches the included KAK .578-28 Micro Flash Can. At 8 inches this barrel keeps the overall platform compact while covering the front end from muzzle device to upper receiver.
Upper Receiver and Handguard
The upper receiver is a 6061 pistol caliber billet design in 6061-T6 aluminum with a Type 3 Class 2 hardcoat anodized finish. The freefloat M-Lok handguard is aircraft-grade aluminum in black, providing M-Lok attachment points along the rail body for accessory mounting. These two components define the exterior structure of the upper assembly on this AR-45 platform.
PCC Bolt Assembly and Charging Handle
The PCC AR bolt assembly is spec-matched to .45 ACP, with a 9310 alloy steel bolt head and 8620 alloy steel body, both finished in nitride. A Mil-Spec AR-15 M4 charging handle is included to complete the upper component set. These two parts cover the upper internal components beyond the barrel and handguard.
Buffer System and Brace
The buffer system in this kit includes a heavy-duty pistol buffer tube, an 8 oz buffer, a recoil spring, an AR-15 M16 Mil-Spec receiver end plate, and a castle nut. The Gauntlet Arms polymer stabilizing brace in black rounds out the kit, providing a rear interface for the pistol platform.
Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included.
