SB Tactical SBT5 Pistol Stabilizing Brace

The SB Tactical SBT5 is the practical way to put a shoulderable rear on an MP5-pattern pistol without going the SBR route. It is a side-folding stabilizing brace that pins to the single rear push-pin found on the SP5, MKE AP5, GSG/German Sport Guns ZF-5, and PTR 9CT. Folded, it shortens the package for transport and storage; deployed, it braces against the forearm or shoulders like the factory HK stock it mimics in outline.

The side-folding hinge is the feature that sets it apart from fixed braces: an MP5 pistol with the SBT5 folded is genuinely compact, which is the whole point of a roller-delayed 9mm in this size class. The brace uses SB Tactical's polymer strut and cuff and installs on the rear trunnion push-pin without gunsmithing on a compatible host.

Fitment matters here. The SBT5 is cut for single rear push-pin guns. The 2-pin "K" pattern pistols (SP5K and similar) use the separate SBT5K, so do not order this one for a K model. Confirm your host uses the single rear pin before buying.