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

IX 16-Inch 9mm AR-9 Upper Build Kit with M-Lok Handguard

The IX 16-Inch 9mm AR-9 Upper Build Kit includes an upper receiver, barrel, handguard, and muzzle device. The 16-inch BC-9 barrel features 416R stainless steel construction with polished stainless steel finish and 1:10 twist rate. The upper assembly includes a 6061-T6 billet aluminum upper receiver with Type III hardcoat anodized finish, 15-inch free-float M-Lok handguard, and 9mm A2 birdcage flash hider with manganese phosphate finish. Designed for 9mm blowback operation in AR-9 platforms. BCG and charging handle are not included.

Key Features

• 16-inch BC-9 barrel, 416R stainless steel, polished finish, 1:10 twist rate
• 9mm chambering for AR-9 pistol caliber carbine applications
• 6061-T6 billet aluminum upper receiver, Type III hardcoat anodized finish
• 15-inch free-float M-Lok handguard for accessory mounting
• 9mm A2 birdcage flash hider, manganese phosphate finish
• 1/2x36 barrel and muzzle thread pitch for 9mm muzzle devices
• Blowback gas system operation

Perfect For

• Builders assembling 9mm AR-9 rifle configurations
• Users seeking upper build kits with stainless steel barrels
• Those prioritizing M-Lok accessory mounting compatibility
• Shooters requiring 16-inch barrel length for rifle configurations

9mm Blowback Operation and Barrel Specifications

The 9mm chambering operates through blowback action without requiring a gas system. The 16-inch BC-9 barrel features 416R stainless steel construction with polished stainless steel finish for corrosion resistance and aesthetic appearance. The 1:10 twist rate provides stabilization for 9mm projectiles. The 1/2x36 thread pitch accommodates 9mm-specific muzzle devices including the included A2 birdcage flash hider with manganese phosphate finish.

Billet Upper Receiver and M-Lok Handguard

The AR-15 billet upper receiver features 6061-T6 billet aluminum construction with Type III hardcoat anodized finish designed for pistol caliber applications. The billet construction provides enhanced rigidity compared to forged uppers. The 15-inch free-float M-Lok handguard provides M-Lok slots for accessory mounting along the handguard length and extends to near-muzzle length on the 16-inch barrel configuration.

AR-9 Upper Build Kit Configuration

The upper build kit includes upper receiver, barrel, handguard, and muzzle device for AR-9 rifle builds. The 16-inch barrel length meets rifle length requirements while the blowback operation eliminates gas system components. The free-float handguard mounts to the upper receiver without barrel contact. BCG and charging handle are not included and must be purchased separately. The configuration requires 9mm-specific bolt carrier group designed for blowback operation.

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