Davidson Defense 3 Squared 16-inch 1:10 9MM AR-9 Freefloat M-Lok Handguard Rifle Upper Build Kit

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

The 3 Squared 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 stainless finish, 1:10 twist rate, and 1/2x36 thread pitch, paired with a black 9mm A2 birdcage flash hider and a black crush washer. The Freedom Factory Tactical dedicated AR-9 7075-T6 aluminum anodized upper receiver features M4 feed ramps and an ejection port door with rod and spring, paired with a 15-inch ultra-lightweight minimalist rail freefloat M-LOK handguard in lightweight aluminum with a partial Picatinny top rail and no anti-rotation tabs. BCG and charging handle are not included.

Key Features

• 16-inch M4 profile 416R stainless steel barrel, stainless finish, 1:10 twist, 1/2x36 thread pitch, 9mm
• Direct blowback platform
• Black 9mm A2 birdcage flash hider, 1/2x36, black crush washer included
• Freedom Factory Tactical dedicated AR-9 7075-T6 aluminum upper receiver, anodized, M4 feed ramps, ejection port door with rod and spring
• 15-inch ultra-lightweight minimalist rail freefloat M-LOK handguard, lightweight aluminum, partial Picatinny top rail, no anti-rotation tabs
• BCG and charging handle not included

Perfect For

• AR-9 rifle builders sourcing a 9mm upper build kit with a Freedom Factory Tactical dedicated AR-9 upper receiver, a 16-inch 416R stainless steel barrel, and a 15-inch ultra-lightweight minimalist M-LOK freefloat handguard, 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 stainless steel barrel, dedicated AR-9 anodized upper receiver with M4 feed ramps, and lightweight minimalist M-LOK freefloat handguard covered in one kit
• AR-9 PCC rifle builders who want a 9mm upper build kit with a dedicated AR-9 upper receiver and a 15-inch ultra-lightweight minimalist M-LOK freefloat handguard with a partial 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 stainless finish. The twist rate is 1:10 and the thread pitch is 1/2x36, which matches the included black 9mm A2 birdcage flash hider. A black 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 Freedom Factory Tactical dedicated AR-9 7075-T6 aluminum upper receiver carries an anodized finish with M4 feed ramps and an ejection port door assembly including door, rod, and spring. The 15-inch ultra-lightweight minimalist rail freefloat M-LOK handguard is lightweight aluminum with a partial Picatinny top rail 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.