The PMAG Minus 5 Round Limiter installs in 10, 20, or 25 round 7.62x51 LR/SR GEN M3 PMAG bodies, reducing the magazine capacity by five rounds. Designed for sporting and hunting applications, installation of the Limiter is simple, tool-less, and requires no permanent modification of the magazine body. This will NOT make a banned magazine legal. This product is intended for TEMPORARY capacity reduction of PMAG LR/SR GEN M3 magazines.