This 9mm load is rated at +P pressures, and as such, it is safe to use in any 9mm chambered pistols that are in normal operating condition. The hard cast bullet will not foul a functional barrel that is in a normal state of operation, including polygonal barrels, in any make of pistol, including Glock pistols. This load is designed to penetrate deep (4 to 6 feet) in a straight line, through flesh and bones, and that flat nose does considerably more terminal damage, as it crushes its way through tissues. It keeps the bullet nose forward and ensures very deep straight-line penetration.