Davidson Defense Foe-Hammer 7.5-inch Pistol-Gas 1:8 300 AR-15 Tubular Handguard Pistol Complete Upper Build

Foe-Hammer 7.5-inch .300 Blackout AR-15 Complete Upper

The Foe-Hammer is built around a 7.5-inch .300 Blackout barrel with an HBAR profile, finished in phosphate, paired with a "Panhead" billet upper receiver. It pairs a 7-inch MFFAR7 free-float smooth handguard with an AR-15 birdcage flash hider at the muzzle, running on a pistol-length gas system. A complete bolt carrier group and Mil-Spec charging handle round out the upper, giving the buyer everything needed on the upper side.

Key Features

• 7.5-inch .300 Blackout barrel, 1:8 twist, HBAR profile, phosphate finish
• Pistol-length gas system with micro low-profile steel gas block
• "Panhead" billet upper receiver, NOFA configuration
• .458-style ejection port
• MFFAR7 7-inch free-float smooth handguard
• AR-15 birdcage flash hider
• Complete bolt carrier group and Mil-Spec charging handle included

Barrel and Gas System

The barrel runs 7.5 inches long, chambered in .300 Blackout and finished in phosphate with an HBAR profile. It carries a 1:8 twist rate and a 5/8x24 muzzle thread. Gas cycles back to the action through a pistol-length system, running a pistol-length gas tube and a micro low-profile steel gas block sized to a .750-inch journal.

Upper Receiver and Handguard

The upper receiver is a "Panhead" billet unit, built in a NOFA configuration and featuring a .458-style ejection port. The ejection port carries a standard .223/5.56 door with its rod and spring installed. Over the barrel sits a 7-inch MFFAR7 handguard, a free-float smooth design.

Muzzle Device

Capping the muzzle is an AR-15 birdcage flash hider, threaded to match the barrel's 5/8x24 pattern and secured with the included 5/8-inch black crush washer.

Bolt Carrier Group and Charging Handle

A complete AR-15 bolt carrier group is included, made in the USA and listed for use across 5.56 NATO, .223 Remington, .300 Blackout, and .350 Legend. That broader listing describes the BCG itself; the barrel and chambering on this upper remain .300 Blackout. A Mil-Spec AR-15 M4 charging handle rounds out the upper's operating components.

Follow all manufacturer instructions and safe handling practices.

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