Thumbdrive M&P Full 9/40/357/45 Holster, has an exclusive thumb-activated safety that secures weapon at all imagetimes. The removable Chop-Block attachment feature on this Gun Holster from 511 Tactical helps prevent others from removing it during a weapon retention struggle. Thumbdrive M&P Full 4in 9/40/357/45 Holster to offer military and law enforcement professionals the perfect holster for tactical and on-duty situations.