Middle of Back MOB Concealed Gun Holster for Heckler and Koch HK H&K P30 P30L 45 45 Compact 45 Compact Tactical P2000 USP USP Compact USP Compact Tactical USP Gun holster for concealed carry fit for full size semi-autos. Inside the Waistband (IWB) carry method. Material is high quality synthetic suede that is very smooth & will not irritate the skin like other holsters. King Holsters are by far the best bet for maximum concealed, comfortable carry. Listed below are examples of guns that will fit this model holster. Please note this list is not intended to be all inclusive. More guns will fit this holster.