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

Rufio 16 Inch Carbine Gas 1-16 350 Legend AR-15 Freefloat M-Lok Handguard Rifle Upper Build Kit

This upper build kit combines a 4150 CrMoV Balmung barrel with a freefloat M-Lok handguard and a micro low profile gas block for a 350 Legend platform. The 16 inch barrel uses a carbine length gas system and a 1-16 twist rate, built on a 7075 T6 aluminum upper receiver with M4 feed ramps and a phosphate coated barrel finish. This kit covers the barrel, receiver, and handguard along with the forward assist, ejection port door, and muzzle hardware needed to round out the upper side of a 350 Legend build. BCG and charging handle are not included.

Key Features

• 4150 CrMoV Balmung barrel, 1-16 twist, phosphate finish
• Freefloat M-Lok handguard for accessory mounting
• Micro low profile gas block with carbine length stainless steel gas tube
• 7075 T6 aluminum upper receiver, anodized finish, M4 feed ramps
• Government profile barrel, 5/8x24 thread pitch
• Forward assist assembly included
• Ejection port door with rod and spring included
• GI birdcage flash hider and crush washer included

Perfect For

• 350 Legend AR-15 builders sourcing a barreled upper for their platform
• Builders who already have a bolt carrier group and charging handle
• Shooters looking for a freefloat M-Lok upper without a complete firearm

Freefloat M-Lok Handguard

The freefloat M-Lok handguard included in this kit does not contact the barrel along its length. This design keeps the handguard isolated from the receiver and barrel assembly. M-Lok slots run along the handguard for mounting lights, optics, and other accessories. The handguard is included as part of the upper side component set alongside the barrel and receiver.

Carbine Length Gas System

This build includes a carbine length stainless steel gas tube paired with a micro low profile gas block. These two components make up the gas system included with this upper. The low profile design keeps the gas block compact along the barrel. Both pieces are included as part of the barreled upper assembly.

Balmung Barrel

The barrel included in this kit is a 4150 CrMoV Balmung barrel with a 1-16 twist rate and a phosphate finish. It carries a government profile and a 5/8x24 threaded muzzle end. The twist rate and material are matched to the 350 Legend platform this upper is built around. This barrel is the core component of the included upper assembly.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. BCG and charging handle are not included. This kit does not constitute a complete firearm.