Davidson Defense Cottonmouth 350 16-inch Carbine-Gas 1:16 .350 Legend AR-15 Freefloat M-Lok Handguard Rifle Complete Upper Build

Davidson Defense Cottonmouth 350 AR-15 Complete Upper - 16-inch, .350 Legend, Carbine Gas, M-Lok Freefloat Handguard

The Davidson Defense Cottonmouth 350 is a .350 Legend AR-15 complete upper built around a 7075-T6 aluminum upper receiver with an anodized finish. The build includes a 16-inch M4 profile barrel in 4150 chrome moly vanadium steel with a phosphate finish, a 1:16 twist rate, and a 5/8x24 thread pitch, a freefloat M-Lok handguard in 6061-T6 aluminum, a micro low-profile 0.75 gas block, a GI Birdcage flash hider at 5/8x24, a nitride-finished 9310 alloy steel bolt carrier group compatible with 5.56 and .223 and .300 and .350, and a Mil-Spec M4 charging handle.

Key Features

• 7075-T6 aluminum upper receiver, anodized finish
• 16-inch M4 profile barrel, 4150 chrome moly vanadium, phosphate finish
• .350 Legend
• 1:16 twist rate
• 5/8x24 thread pitch
• Carbine gas system
• Micro low-profile 0.75 gas block
• Freefloat M-Lok handguard, 6061-T6 aluminum
• GI Birdcage flash hider, 5/8x24
• AR-15 9310 alloy steel bolt carrier group, nitride finish, 5.56 and .223 and .300 and .350 compatible
• Mil-Spec M4 charging handle

Perfect For

• AR-15 builders sourcing a complete .350 Legend upper with BCG and charging handle included
• Shooters pairing this complete upper with an existing AR-15 lower assembly
• Builders looking for a freefloat M-Lok complete upper in .350 Legend

Balmung Barrel and Gas System

The Balmung barrel is a 16-inch M4 profile barrel in 4150 chrome moly vanadium steel with a phosphate finish. It is chambered in .350 Legend with a 1:16 twist rate and a 5/8x24 thread pitch. The carbine gas system runs through a micro low-profile 0.75 gas block, and a GI Birdcage flash hider at 5/8x24 is included at the muzzle.

Upper Receiver and Handguard

The upper receiver is 7075-T6 aluminum with an anodized finish. The freefloat M-Lok handguard is 6061-T6 aluminum and provides a clean mounting surface for M-Lok compatible accessories along the handguard body.

Bolt Carrier Group and Charging Handle

The included bolt carrier group is 9310 alloy steel with a nitride finish, compatible with 5.56, .223, .300, and .350 platforms. A Mil-Spec M4 charging handle is included as part of the complete upper component set.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.