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

Nine Runner 16-inch 1:10 9mm AR-9 Freefloat M-LOK Handguard Rifle Upper Build Kit

The Nine Runner is a 9mm AR-9 Upper Build Kit built around a 16-inch direct blowback platform. The kit centers on a 16-inch M4 profile 416R stainless steel barrel with a 1:10 twist rate and 1/2x36 thread pitch, paired with a black A2 birdcage flash hider and a black 1/2-inch crush washer. The billet AR-15 upper receiver for pistol caliber builds is paired with a 15-inch freefloat M-LOK handguard featuring a full-length Picatinny top rail, integrated QD sling mounts, and no anti-rotation tabs. BCG and charging handle are not included.

Key Features

• 16-inch M4 profile 416R stainless steel barrel, 1:10 twist, 1/2x36 thread pitch, 9mm
• Direct blowback platform
• Black A2 birdcage flash hider, 1/2x36, black 1/2-inch crush washer included
• Billet AR-15 upper receiver for pistol caliber builds
• 15-inch freefloat M-LOK handguard, full-length Picatinny top rail, integrated QD sling mounts, no anti-rotation tabs
• BCG and charging handle not included

Perfect For

• AR-9 rifle builders sourcing a 9mm upper build kit with a billet pistol caliber upper receiver, 16-inch 416R stainless steel barrel, and 15-inch freefloat M-LOK handguard with full-length Picatinny top rail and integrated QD sling mounts, pairing it with their own AR-9 bolt carrier group and charging handle
• Shooters building a 16-inch 9mm direct blowback AR-9 rifle platform who prefer to select their own BCG while having the 416R stainless steel barrel, billet pistol caliber upper receiver, and freefloat M-LOK handguard with integrated QD sling mounts covered in one kit
• AR-9 PCC rifle builders who want a 9mm upper build kit with a billet pistol caliber upper receiver and a 15-inch freefloat M-LOK handguard with a full-length Picatinny top rail without sourcing components separately

Barrel and Muzzle Device

The 16-inch M4 profile barrel is chambered in 9mm and constructed from 416R stainless steel with a 1:10 twist rate and 1/2x36 thread pitch, which matches the included black A2 birdcage flash hider. A black 1/2-inch crush washer is included. The direct blowback platform design addresses the 9mm cartridge in an AR-9 pistol caliber carbine build without a gas system.

Upper Receiver and Handguard

The billet AR-15 upper receiver for pistol caliber builds pairs with a 15-inch freefloat M-LOK handguard featuring a full-length Picatinny top rail, integrated QD sling mounts, and no anti-rotation tabs, with M-LOK attachment points along the body for accessory mounting. 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. Verify compatibility with your specific 9mm AR-9 lower receiver and magazine pattern before use.