SB Tactical SBA6 5-Position Adjustable Pistol Stabilizing Brace Kit with Armaspec Gen 3 H3 Sound Mitigation Buffer, Mil-Spec 6-Position Buffer Tube, Castle Nut & Ambidextrous QD End Plate

SB Tactical SBA6 5-Position Adjustable Pistol Stabilizing Brace Kit with Armaspec Gen 3 H3 Sound Mitigation Buffer, Mil-Spec 6-Position Buffer Tube, Castle Nut & Ambidextrous QD End Plate

This kit pairs an SB Tactical SBA6 pistol stabilizing brace with an Armaspec Gen 3 H3 sound mitigation buffer system and a Mil-Spec six-position carbine buffer tube, capped off with an ambidextrous QD sling mount end plate.

Key Features

• SB Tactical SBA6 pistol stabilizing brace, 5-position adjustable
• Slim, lightweight, snag-resistant carbine-style profile
• Adjustable nylon stabilizing strap included
• Armaspec H3 Gen 3 sound mitigation buffer, 5.6 oz.
• Adjustable internal spring weight system with polymer guide rod base
• Mil-Spec heavy-duty 6-position carbine buffer tube
• Heavy-duty steel castle nut and ambidextrous QD sling mount end plate included

Stabilizing Brace

The SBA6 is molded from high-strength, impact-resistant polymer in a streamlined, carbine-style profile and finished in matte black. It adjusts across 5 positions, running from approximately 6.2 to 10.25 inches in length depending on the position selected, with a height of roughly 4.5 to 5.0 inches and a width of up to 2.1 inches at its widest point. The rear surface carries a slim, non-slip rubberized texture, and an adjustable nylon stabilizing strap is included for securing the brace to the forearm.

Buffer System

At the heart of this kit is an Armaspec H3 Gen 3 sound mitigation buffer, weighing 5.6 ounces. It's a single-stage, drop-in replacement design with an adjustable internal spring weight system and a polymer guide rod base, engineered to help reduce recoil impulse and cycling noise while maintaining reliable function. This drop-in system is designed for standard AR-15 carbine components.

Buffer Tube and End Plate

Behind the buffer sits a Mil-Spec six-position carbine buffer tube, sized to Mil-Spec diameter. A heavy-duty steel castle nut secures the buffer tube assembly to the lower receiver, paired with an AR-15 end plate featuring a center ambidextrous QD sling swivel attachment point.

Follow all manufacturer instructions and safe handling practices.

Ensure compliance with all applicable federal, state, and local laws.