Davidson Defense Broadhead 7.5-inch 1:16 45ACP AR-45 Freefloat M-Lok Handguard Pistol Upper Build Kit

Broadhead 7.5-inch .45 ACP AR-45 Upper Build Kit

The Broadhead is a 7.5-inch .45 ACP AR-45 Upper Build Kit built around a Bear Creek Arsenal barrel and a 6061 aluminum billet pistol-caliber upper receiver. The barrel pairs with an ACE-20 Series free-float M-LOK handguard, giving the upper-side assembly its structural foundation. The build runs on a direct blowback system, requiring no gas block or gas tube. BCG and charging handle are not included, leaving the buyer to supply those components separately.

Key Features

• 7.5-inch .45 ACP Bear Creek Arsenal barrel, 1:16 twist
• Direct blowback operating system, no gas block or gas tube required
• 6061 aluminum billet pistol-caliber AR-15 upper receiver
• ACE-20 Series 7-inch free-float M-LOK handguard with Picatinny top rail
• AR-15 .45 ACP birdcage muzzle brake
• BCG and charging handle are not included.

Barrel and Muzzle Device

The Broadhead's barrel is a Bear Creek Arsenal 7.5-inch .45 ACP barrel built from 4150 chrome moly vanadium steel with a Parkerized finish and an M4 contour. It carries a 1:16 twist rate, a .578x28 muzzle thread, and a .750-inch gas block journal, and it operates on a direct blowback system that requires no gas block or gas tube. An AR-15 .45 ACP birdcage muzzle brake finished in manganese phosphate is installed at the muzzle using the matching .578x28 thread pattern, secured with the included 5/8-inch black crush washer. Together these components define the barrel group that anchors the rest of the upper.

Upper Receiver and Handguard

The upper receiver is a 6061 aluminum billet unit built specifically for pistol-caliber AR-15 platforms, giving the Broadhead its upper-side structural foundation. It's paired with an ACE-20 Series free-float M-LOK handguard, 7 inches long, featuring M-LOK accessory slots and a Picatinny top rail. Both the receiver and handguard are matched to the barrel's dimensions and thread specifications supplied with this kit. They form the defining upper-side identity of this build.

Follow all manufacturer instructions and safe handling practices.

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

BCG and charging handle are not included.