The sbt5 pistol stabilizing brace was developed in conjunction with b&t usa and designed after the iconic b&t stock for hk platforms.Featuring an integral, side-folding mechanism, the sbt5 fits hk mp5/mp5k reverse stretch clones.It comes with an adjustable nylon strap.This model is not compatible with hk91 or mp5k clones and is constructed of aluminum.Finish: BlackType: BraceModel: SBT5ADimensions: 10.20" L x 1.25" WMaterial: Aluminum