Davidson Defense Commandant 8.5-inch Pistol-Gas 1:7 5.56x45mm NATO AR-15 Freefloat M-Lok Handguard Pistol Complete Upper Build

Commandant 8.5-inch Pistol Complete Upper Build 5.56 NATO

This complete upper delivers reliable 5.56 NATO performance in a compact 8.5-inch platform. Built around a nitride-finished 4150 CrMoV barrel with 1:7 twist rate, it pairs a stripped 7075-T6 aluminum upper receiver with a freefloat M-Lok handguard for shooters who need a short, modular setup. The included bolt carrier group and charging handle make this upper ready to pair with your lower receiver.

Key Features

• 8.5-inch nitride-finished 4150 CrMoV barrel with 1:7 twist rate for 5.56 NATO
• Freefloat 7-inch M-Lok handguard in 6061-T6 aluminum for modular accessory mounting
• Stripped 7075-T6 aluminum upper receiver with M4 feed ramps and forward assist
• Complete bolt carrier group in nitride-finished 9310 alloy steel, made in the USA
• M4 mil-spec charging handle and low-profile gas block included
• 1/2x28 threaded muzzle with A2 birdcage flash hider and crush washer

Perfect For

• Shooters building pistol-length AR-15 platforms with compact uppers
• Precision rifle builds requiring freefloat handguard stability
• Modular builders who value M-Lok compatibility and quick accessory changes
• 5.56 NATO shooters seeking reliable short-barrel performance

Compact Pistol-Length Design

This 8.5-inch upper uses pistol-length gas tuning to cycle reliably in a short package. The freefloat design isolates the barrel from handguard contact, allowing consistent accuracy without the interaction that can occur with traditional free-floating setups. The M-Lok handguard provides clean, lightweight accessory mounting without rail bulk.

Quality Materials and Finish

The barrel uses 4150 CrMoV steel with a durable nitride finish that resists corrosion and wear. The upper receiver machined from 7075-T6 aluminum delivers strength without excess weight. The bolt carrier group finished in nitride ensures reliable cycling and long component life across thousands of rounds.

M-Lok Modular Ecosystem

The 7-inch M-Lok handguard integrates seamlessly with the growing ecosystem of lightweight tactical and precision accessories. This design allows you to customize the upper for your specific mission without replacing the handguard. The freefloat design preserves accuracy while you add lights, grips, or other components.

Complete Upper Compatibility

This upper includes the bolt carrier group and charging handle needed to function with any compatible AR-15 lower receiver. The stripped upper receiver accepts standard AR-15 components. Pair this with your preferred lower parts kit and lower receiver to complete your build. Magazine compatibility and feeding depend on your lower receiver configuration.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable laws. Verify lower receiver compatibility before assembly. Use appropriate 5.56 NATO ammunition for reliable performance.