Made of stainless steel and heat treated to a 50 Rockwell hardness, the Kahr PM45/CM45 .45 ACP 6-Round Replacement Magazine features a grip-extension design. Compatible with Kahr PM45/CM45 .45 ACP firearms. Kahr PM45/CM45 .45 ACP 6-Round Replacement Magazine - Shooting Supplies And Accessories at Academy Sports