AR-15 Pistol Brace Kit, FDE SBA3 Adjustable Brace, 6-Position Buffer Tube, 5.5 oz 9mm Carbine Buffer, Spring, Castle Nut & End Plate

AR-15 AR-9 Pistol Brace Kit - FDE SB Tactical SBA3 Adjustable Brace, Mil-Spec 6-Position Buffer Tube, 5.5 oz 9mm Carbine Buffer, Spring, Castle Nut and End Plate

The AR-15 AR-9 Pistol Brace Kit is a buffer system and brace bundle for standard AR-15 and AR-9 mil-spec pattern lower receivers. The kit includes an FDE SB Tactical SBA3 adjustable pistol stabilizing brace, a mil-spec 6-position heavy-duty aluminum buffer tube, a 5.5 oz 9mm carbine buffer, a carbine recoil spring, a mil-spec steel receiver end plate, and a standard AR-15 carbine castle nut. The lower receiver is not included.

Key Features

• FDE SB Tactical SBA3 adjustable pistol stabilizing brace
• Mil-spec 6-position heavy-duty aluminum buffer tube
• 5.5 oz 9mm carbine buffer
• Carbine recoil spring
• Mil-spec steel receiver end plate and castle nut
• Anodized, phosphate, or oxide finish depending on the component
• Made in the USA
• Compatible with AR-15 and AR-9 mil-spec lower receivers

Perfect For

• AR-9 pistol builders sourcing a complete buffer system and brace bundle
• AR-15 builders running a 9mm configuration
• Builders replacing a buffer system on an existing AR-9 pistol lower
• Shooters adding an SB Tactical SBA3 brace to a mil-spec lower build

SB Tactical SBA3 Brace

The SB Tactical SBA3 is an adjustable pistol stabilizing brace in FDE finish included with this kit. It is compatible with mil-spec diameter buffer tubes and offers an adjustable fit across multiple positions. The SBA3 pairs directly with the mil-spec 6-position buffer tube included in this bundle.

Buffer Tube and Buffer System Components

The mil-spec 6-position buffer tube is heavy-duty aluminum with standard AR-15 receiver extension threading, compatible with mil-spec AR-15 and AR-9 lower receivers. The 5.5 oz 9mm carbine buffer is the core buffer component for AR-9 platform builds and is paired with a standard carbine recoil spring in this kit. The mil-spec steel receiver end plate and standard carbine castle nut complete the rear hardware group for the lower receiver.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.