Davidson Defense IX 16-inch 1:10 9MM AR-9 Freefloat M-Lok Handguard Rifle Upper Build Kit

Davidson Defense IX AR-9 Upper Build Kit - 16-inch, 9mm, M-Lok Freefloat Handguard

The Davidson Defense IX is a 9mm AR-9 upper build kit built around a billet 6061-T6 aluminum upper receiver with a Type III hardcoat anodized finish. The kit includes a 16-inch barrel in 4150 chrome moly vanadium steel with a nitride finish, a 1:10 twist rate, and a 1/2x36 thread pitch, a 15-inch freefloat M-Lok handguard with a full-length Picatinny top rail, QD mounts, and no anti-rotation tabs, and a 9mm A2 Birdcage flash hider in manganese phosphate at 1/2x36. BCG and charging handle are not included.

Key Features

• Billet 6061-T6 aluminum upper receiver, Type III hardcoat anodized finish
• 16-inch barrel, 4150 chrome moly vanadium, nitride finish
• 9mm
• 1:10 twist rate
• 1/2x36 thread pitch
• 15-inch freefloat M-Lok handguard, full-length Picatinny top rail, QD mounts, no anti-rotation tabs
• 9mm A2 Birdcage flash hider, manganese phosphate, 1/2x36
• BCG not included
• Charging handle not included

Perfect For

• AR-9 builders sourcing a 9mm upper build kit without BCG and charging handle in a 16-inch rifle configuration
• Shooters pairing this upper kit with an existing AR-9 lower assembly and their own BCG and charging handle
• Builders looking for a 9mm upper build kit with a full-length Picatinny top rail freefloat M-Lok handguard

Barrel and Muzzle Device

The barrel is a 16-inch unit in 4150 chrome moly vanadium steel with a nitride finish, chambered in 9mm with a 1:10 twist rate and a 1/2x36 thread pitch. A 9mm A2 Birdcage flash hider in manganese phosphate at 1/2x36 covers the muzzle end of this upper build kit.

Upper Receiver and Handguard

The billet 6061-T6 aluminum upper receiver features a Type III hardcoat anodized finish, forming the structural core of the upper assembly. The 15-inch freefloat M-Lok handguard features a full-length Picatinny top rail, QD mounts, and no anti-rotation tabs, surrounding the barrel without contact and providing M-Lok mounting positions and a full-length top rail for compatible accessories.

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