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

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

The Davidson Defense IX is a 9mm AR-9 complete upper built around a billet 6061-T6 aluminum upper receiver with a Type III hard coat anodized finish. The build 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 and integrated QD sling mounts, a 9mm A2 Birdcage flash hider at 1/2x36, a nitride-finished 8620 alloy steel 9mm bolt carrier group, and a Mil-Spec M4 charging handle.

Key Features

• Billet 6061-T6 aluminum upper receiver, Type III hard coat 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, integrated QD sling mounts
• 9mm A2 Birdcage flash hider, 1/2x36
• 8620 alloy steel 9mm bolt carrier group, nitride finish
• Mil-Spec M4 charging handle

Perfect For

• AR-9 builders sourcing a complete 9mm upper with BCG and charging handle included in a 16-inch rifle configuration
• Shooters pairing this complete upper with an existing AR-9 lower assembly
• Builders looking for a 9mm complete upper 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 complete upper.

Upper Receiver and Handguard

The billet 6061-T6 aluminum upper receiver features a Type III hard coat anodized finish, forming the structural core of the upper assembly. The 15-inch freefloat M-Lok handguard features a full-length Picatinny top rail and integrated QD sling mounts, 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 needed to run this complete upper on a compatible AR-9 lower receiver.

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