Scout .308 Mag M77-3Pi the three-shot magazine for the Ruger gunsite scout rifle is constructed of durable glass-filled nylon with a stainless steel spring a snap-on dust cover is included which helps keep the magazine internals clean and allows long-term storage of the magazine while loaded the three-round magazine fits near-flush the base-plate is exposed when the magazine is loaded in the rifle not recommended for use with other M24/M40/AICS-Style Systems.>