Davidson Defense Flamberge 16-inch 1:10 9mm AR-9 Freefloat KeyMod Handguard Rifle Upper Build Kit

Flamberge 16-inch 1:10 9mm AR-9 Freefloat KeyMod Handguard Rifle Upper Build Kit

The Flamberge 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 crush washer. The dedicated AR-9 7075-T6 aluminum anodized black upper receiver features an ejection port door with rod and spring and accepts standard AR-15 pattern forward assist components, paired with a 15-inch Trinity Force KMX KeyMod freefloat handguard in black aluminum with a full-length Picatinny top rail. 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 crush washer included
• Dedicated AR-9 7075-T6 aluminum upper receiver, anodized black, ejection port door with rod and spring, standard AR-15 pattern forward assist compatible
• 15-inch Trinity Force KMX KeyMod freefloat handguard, black aluminum, full-length Picatinny top rail
• AR-9 lower receiver compatible
• Glock pattern and compatible AR-9 magazine compatible depending on lower receiver
• BCG and charging handle not included

Perfect For

• AR-9 rifle builders sourcing a 9mm upper build kit with a dedicated AR-9 upper receiver, a 16-inch 416R stainless steel barrel, and a 15-inch Trinity Force KMX KeyMod freefloat handguard with a full-length Picatinny top rail, 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, dedicated AR-9 anodized upper receiver, and long-profile KeyMod freefloat handguard covered in one kit
• AR-9 builders who want a 9mm upper build kit with a 416R stainless steel barrel at rifle length and a 15-inch Trinity Force KMX KeyMod handguard with full-length Picatinny rail coverage 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 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 dedicated AR-9 7075-T6 aluminum upper receiver carries an anodized black finish with an ejection port door assembly including door, rod, and spring, and accepts standard AR-15 pattern forward assist components. The 15-inch Trinity Force KMX KeyMod freefloat handguard is black aluminum with a full-length Picatinny top rail and KeyMod 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 AR-9 lower receiver and magazine pattern before use.