Davidson Defense Mutton Chops 10.5-inch 1:10 9MM AR-9 Freefloat Keymod Handguard Pistol Upper Build Kit

Davidson Defense Mutton Chops 10.5-inch 9mm AR-9 Freefloat Keymod Pistol Upper Build Kit

The Davidson Defense Mutton Chops is a 9mm AR-9 Upper Build Kit built around a compact 10.5-inch platform. The kit centers on a Bear Creek 10.5-inch steel 9mm barrel with a black nitride finish, 1:10 twist rate, and 1/2x36 thread pitch, paired with a 9mm A2 birdcage flash hider and a crush washer. The upper receiver is 7075-T6 aluminum with a black anodized finish, M4 feed ramps, an AR-15 ejection port door assembly, and a forward assist assembly, paired with a 10-inch ultra-slim freefloat Keymod rail handguard with a full-length top Picatinny rail. BCG and charging handle are not included.

Key Features

• Bear Creek 10.5-inch steel 9mm barrel, black nitride finish, 1:10 twist, 1/2x36 thread pitch
• 9mm A2 birdcage flash hider, 1/2x36, crush washer included
• 7075-T6 aluminum upper receiver, black anodized, M4 feed ramps, ejection port door assembly, forward assist assembly
• 10-inch ultra-slim freefloat Keymod handguard, full-length top Picatinny rail, Keymod accessory mounting, slim profile
• BCG and charging handle not included

Perfect For

• Builders sourcing a compact 9mm AR-9 upper build kit and pairing it with their own bolt carrier group and charging handle
• Shooters building a 10.5-inch 9mm pistol platform who already have a lower receiver and prefer to select their own BCG
• AR-9 builders who want a Bear Creek barrel and freefloat Keymod handguard with a full-length Picatinny rail covered in one upper kit

Bear Creek Barrel and Muzzle Device

The Bear Creek barrel is 10.5 inches, chambered in 9mm, constructed from steel with a black nitride finish and a 1:10 twist rate. The thread pitch is 1/2x36, which matches the included 9mm A2 birdcage flash hider. A crush washer is included with the muzzle device. At 10.5 inches this barrel keeps the overall upper compact while covering the front end from muzzle device to upper receiver.

Upper Receiver and Handguard

The upper receiver is 7075-T6 aluminum with a black anodized finish, M4 feed ramps, an AR-15 ejection port door assembly, and a forward assist assembly. The 10-inch ultra-slim freefloat Keymod handguard features a full-length top Picatinny rail and Keymod accessory mounting slots along the body in a slim profile design. These two components define the exterior structure of the upper assembly on this AR-9 platform.

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