The PMAG minus 10 round Limiter installs in 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. Note: will not make a banned magazine legal! This product is intended for temporary capacity reduction of PMAG Gen M3 magazines. This product does not constitute a permanent capacity reduction..