Davidson Defense Blackreach w/SBA3 Brace 6-inch 1:10 9MM AR-9 Freefloat Tubular M-Lok Handguard Pistol Full Build Kit

Davidson Defense Blackreach AR-9 Pistol Full Build Kit with SB Tactical SBA3 Brace - 6-inch 9mm 1:10 Freefloat Tubular M-Lok Handguard

The Davidson Defense Blackreach with SB Tactical SBA3 Brace is an AR-9 pistol full build kit chambered in 9mm with a 6-inch medium profile barrel. The kit includes the upper assembly, 9mm bolt carrier group, charging handle, SB Tactical SBA3 adjustable pistol stabilizing brace, heavy-duty 6-position buffer tube, 5.5 oz 9mm carbine buffer, carbine recoil spring, mil-spec receiver end plate, lower parts kit, and all associated buffer system hardware. The AR-9 platform operates via blowback. The lower receiver is not included.

Key Features

• 6-inch 4150 CrMoV steel medium profile barrel
• Nitride barrel finish
• 1:10 twist rate
• 1-in-2x28 thread pitch
• 7075-T6 aluminum upper receiver with forward assist, anodized finish
• 4.2-inch tubular slim profile M-Lok handguard in aluminum
• 9mm bolt carrier group in 8620 alloy steel, nitride finish
• Mil-spec charging handle
• GI birdcage flash hider with manganese phosphate finish, 1-in-2x28 thread pitch
• SB Tactical SBA3 adjustable pistol stabilizing brace
• Heavy-duty 6-position buffer tube
• 5.5 oz 9mm carbine buffer and carbine recoil spring
• Mil-spec receiver end plate

Perfect For

• AR-9 pistol builders sourcing a complete kit around a 6-inch 9mm upper
• Builders completing a stripped AR-9 compatible lower receiver
• Shooters running a tubular slim profile M-Lok handguard on an AR-9 build
• Builders adding an SB Tactical SBA3 adjustable brace to an AR-9 pistol build

Barrel and Upper Receiver

The 6-inch medium profile barrel is 4150 CrMoV steel with a nitride finish and a 1:10 twist rate. The muzzle is threaded at 1-in-2x28 and pairs with the included GI birdcage flash hider in manganese phosphate finish. The upper receiver is 7075-T6 aluminum with a forward assist and an anodized finish, serving as the core front end structure for the AR-9 build.

Handguard

The 4.2-inch tubular slim profile M-Lok handguard is aluminum in black, keeping the forend lightweight and compact. The M-Lok slots along the handguard provide attachment points for lights, grips, and other accessories. The handguard length is shorter than the 6-inch barrel, and the muzzle device extends beyond the handguard to provide the necessary clearance.

Bolt Carrier Group and Charging Handle

The included 9mm bolt carrier group is built from 8620 alloy steel with a nitride finish. This BCG is the correct unit for AR-9 blowback-operated configurations. The mil-spec charging handle completes the upper component set.

SB Tactical SBA3 Brace and Buffer System

The SB Tactical SBA3 adjustable pistol stabilizing brace pairs with the included heavy-duty 6-position buffer tube. The 5.5 oz 9mm carbine buffer, carbine recoil spring, mil-spec receiver end plate, lower parts kit, and all associated buffer system hardware cover the core lower completion components outside the serialized lower receiver.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included.