Davidson Defense Ronin Competition Left-Handed 8.5-inch Pistol-Gas 1:8 .300 BLK AR-15 Freefloat M-Lok Handguard Pistol Complete Upper Build

The Ronin Competition Left-Handed 8.5-inch .300 BLK AR-15 Complete Upper Build is engineered for performance and versatility in tactical scenarios. Featuring an 8.5-inch heavy barrel with a 1:8 twist rate and a pistol gas system, this upper ensures reliable cycling while maintaining compact size. The barrel, made from 4150 Chrome Moly Vanadium, has a phosphate finish, and is threaded 5/8x24 for compatibility with various muzzle devices, including the included GI Birdcage Flash Hider.

The M-Lok Freefloat handguard, crafted from lightweight 6061-T6 aluminum, provides ample accessory mounting options, and the left-handed Billet Upper Receiver enhances the ergonomic experience. A low-profile gas block and a durable, nitride-finished Davidson Defense Premium Bolt Carrier Group complete this assembly, making it ideal for left-handed shooters who value efficiency in a compact format. This upper build is a solid choice for any gunsmith seeking performance without compromise.