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

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

The Davidson Defense IX is a 9mm AR-9 full 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, a 9mm A2 Birdcage flash hider at 1/2x36, a nitride-finished 8620 alloy steel 9mm bolt carrier group, a Mil-Spec M4 charging handle, a Special Operations glass-filled polymer AR-15 stock, a Mil-Spec heavy-duty 6-position aluminum buffer tube, a 5.5 oz buffer, a carbine recoil spring, a Mil-Spec receiver end plate, and a castle nut. Lower receiver 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
• 9mm A2 Birdcage flash hider, 1/2x36
• 8620 alloy steel 9mm bolt carrier group, nitride finish
• Mil-Spec M4 charging handle
• Special Operations glass-filled polymer AR-15 stock
• Mil-Spec heavy-duty 6-position aluminum buffer tube
• 5.5 oz buffer
• Carbine recoil spring
• Mil-Spec receiver end plate
• Castle nut
• Lower receiver not included

Perfect For

• AR-9 builders sourcing a complete 9mm full build kit with BCG, charging handle, and stock included in a 16-inch rifle configuration
• Shooters pairing this kit with an existing AR-9 lower receiver
• Builders looking for a 9mm full 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 at 1/2x36 covers the muzzle end of this 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, surrounding the barrel without contact and providing M-Lok mounting positions and a full-length top rail for compatible accessories.

Bolt Carrier Group and Charging Handle

The included 9mm bolt carrier group is 8620 alloy steel with a nitride finish. The BCG and Mil-Spec M4 charging handle work together to cycle the action and complete the upper side component set.

Stock and Buffer System

The Special Operations glass-filled polymer AR-15 stock is included with a Mil-Spec heavy-duty 6-position aluminum buffer tube. The buffer system consists of a 5.5 oz buffer and a carbine recoil spring. A Mil-Spec receiver end plate and castle nut complete the rear hardware included with this full build kit.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included.