Magpul PMAG 25 ICAR GEN M3 Window Magazine MAG1490-BLK designed for 6mm ARC and LWRCI Six8 pattern magwells including Surefire ICAR platforms. Features Magpul polymer construction with MagLevel window, stainless-steel spring, and anti-tilt follower. Made in the USA for reliable function in compatible LWRCI or SureFire ICAR firearms. Optimized for 6mm ARC in LWRCI Six8 pattern magwells; MagLevel window for quick round checks; robust polymer body with stainless-steel spring and anti-tilt follower.