The SBX Pistol Stabilizing Brace from SB Tactical is their second generation brace designed for the Sig Sauer MCX and MPX line of firearms. The SBX brace is an update to the SB 15 Pistol Stabilizing Brace and features a more streamlined design with a thicker strap for extra stability. The SBX can also be used on conventional AR-15 type weapons. The entire Pistol Stabilizing Brace family of products are 100% U.S. manufactured.
SB Tactical initially designed pistol braces as a stability-improving device for wounded and disabled veterans, and they continue to innovate and improve on their designs. SB Tactical will stop at nothing to ensure passionate shooters get the expertly-constructed solutions they need to overcome any challenges thrown their way.
Note: Here is the NRA's interpretation of the latest ATF letter regarding the use and legality of pistol braces.
NRA Interpretation of Latest ATF Letter