Magpul Industries Minus 10 Round Limiter, Fits PMAG 7.62x51 LR/SR GEN M3, Black, 3 Pack, Does Not Make Banned Magazines Legal MAG563-BLK The PMAG Minus 10 Round Limiter installs in 10" 20" or 25 round 7.62x51 LR/SR GEN M3 PMAG bodies" reducing the magazine capacity by ten rounds. Designed for sporting and hunting applications" installation of the Limiter is simple" tool-less" and requires no permanent modification of the magazine body.