Davidson Defense Passage 10.5-inch 10.5-inch Carbine-Gas AR-15 Drop-In Handguard Pistol Complete Upper Build

Passage 10.5-inch 5.56 NATO AR-15 Complete Upper

The Passage is built around a 10.5-inch front sight base barrel chambered in 5.56 NATO, paired with a 7075-T6 aluminum upper receiver finished in black anodizing. It pairs a carbine-length two-piece drop-in handguard with an A2 GI-style birdcage flash hider at the muzzle, running on a carbine-length gas system. A complete USA-made bolt carrier group and Mil-Spec charging handle round out the upper, giving the buyer everything needed on the upper side.

Key Features

• 10.5-inch 5.56 NATO barrel with front sight base configuration
• Carbine-length gas system with stainless steel gas tube
• 7075-T6 aluminum upper receiver, black anodized finish
• Carbine-length two-piece drop-in handguard, round seven-hole M4/CAR-15 profile
• A2 GI-style birdcage flash hider
• Complete USA-made bolt carrier group and Mil-Spec charging handle included

Barrel and Front Sight Base

The barrel runs 10.5 inches long, chambered in 5.56 NATO and built in a front sight base configuration rather than a low-profile gas block setup. Mounted on it is a fixed A2-style front sight base, fitted with USA-made steel components including the front sight post, plunger, and spring. Gas cycles back to the action through a carbine-length system, running a carbine-length stainless steel gas tube.

Upper Receiver and Handguard

The upper receiver is machined from 7075-T6 aluminum and finished in black anodizing, cut with M4 feed ramps for smooth feeding and fitted with an AR-15 forward assist assembly. The ejection port carries a standard .223/5.56 door with its rod and spring installed. Over the barrel sits a carbine-length two-piece drop-in handguard in a round, seven-hole M4/CAR-15 skinny profile, finished in black with a single internal heat shield to help manage barrel heat. It mounts using a Colt AR-15 delta ring assembly.

Muzzle Device

Capping the muzzle is an A2 GI-style birdcage flash hider, threaded to match the barrel's 1/2x28 pattern and secured with the included 1/2-inch black crush washer.

Bolt Carrier Group and Charging Handle

A complete USA-made AR-15 bolt carrier group is included, 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 5.56 NATO. 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.