This is a factory 25-round magazine for Sig Sauer R522 rifles.
Sig Sauer R522 is a unique, high-quality trainer/plinker rifle that gives you the look, feel and dependability of the classic SIG556 in .22 LR.
These standard capacity factory magazines feature translucent, reinforced polymer construction with high-visibility followers and durable internal springs. With a full 25-round capacity, these mags are perfect for longer drills and trips to the range.
Remember to pick up a few spare mags to guarantee reliable feeding with .22 LR rifles and pistols.