Davidson Defense Ronin Competition 10.5-inch Carbine-Gas 1:7 5.56 NATO AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit

Davidson Defense Ronin Competition AR-15 Upper Build Kit - 10.5-inch 5.56 NATO Carbine-Gas 1:7 Freefloat M-Lok Handguard

The Davidson Defense Ronin Competition is an AR-15 upper build kit chambered in 5.56 NATO with a 10.5-inch government profile barrel. The kit includes the upper receiver, barrel, handguard, and GI birdcage flash hider. The slick side billet upper receiver and Gauntlet Arms freefloat M-Lok handguard give the front end a clean, accessory-ready profile. A BCG and charging handle are not included.

Key Features

• 10.5-inch 4150 CrMoV steel government profile barrel
• Phosphate barrel finish
• 1:7 twist rate
• 1-in-2x28 thread pitch
• Carbine-length gas system with .750 O.D. micro low-profile gas block
• 6061-T6 aluminum slick side billet upper receiver, Type 3 Class 2 hardcoat anodized finish
• Gauntlet Arms 10-inch freefloat M-Lok handguard in anodized black 6061-T6 aluminum
• GI birdcage flash hider, 1-in-2x28 thread pitch

Perfect For

• AR-15 pistol builders sourcing an upper build kit in 5.56 NATO
• Builders pairing a 10.5-inch carbine-gas upper with their own BCG and charging handle
• Shooters running a slick side billet upper with a Gauntlet Arms freefloat M-Lok handguard
• Builders completing a lightweight AR-15 upper assembly

Barrel and Gas System

The 10.5-inch government profile barrel is 4150 CrMoV steel with a phosphate finish and a 1:7 twist rate. The barrel handles the 5.56 NATO chamber and provides the threaded muzzle end for the included GI birdcage flash hider at a 1-in-2x28 thread pitch. The carbine-length gas system uses a .750 O.D. micro low-profile gas block, which sits beneath the handguard and keeps the forend profile clean and unobstructed.

Upper Receiver and Handguard

The slick side billet upper receiver is 6061-T6 aluminum with a Type 3 Class 2 hardcoat anodized finish. The slick side profile removes the forward assist and ejection port door provisions found on standard upper receivers, giving the build a cleaner exterior profile. The Gauntlet Arms 10-inch freefloat M-Lok handguard is anodized black 6061-T6 aluminum, giving the build a clean forend with M-Lok accessory slots for lights, grips, and other attachments. The handguard length matches the 10.5-inch barrel, with the muzzle device providing clearance beyond the handguard.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. BCG and charging handle are not included.