Shop › PROMAG HK USP 45ACP 20RD BL PROMAG HK USP 45ACP 20RD BL $50.99 ProMag Industries Magazine, 45ACP, 20 Rounds, Fits HK USP45, Steel, Blued Finish HEC-A2 Quantity: Add To Cart Added! ProMag Industries Magazine, 45ACP, 20 Rounds, Fits HK USP45, Steel, Blued Finish HEC-A2