Concealed Gun Holster for Bersa Thunder Ultra Compact Pro Series 9 40 and 45 This holster is truly a unique design. The design is referred to as a yaqui or slide holster. Carry Methods: Inside or outside the pant, Left or right hand, Front or middle of the back. The holster will mold to the shape of your gun to create a secure / snug fit. It is great for concealed carry and will fit most weapons. The large size will securely hold almost all weapons; anything from subcompact semi-autos to full size 1911s. Also great for most revolvers. 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.