This is a 25-round 6.5 Grendel / 6mm ARC AR-15 magazine from ASC. Add to your AR loadout with the ASC 6.5 Grendel / 6mm ARC AR-15 magazine. Constructed from heat-treated 410 stainless steel with black and FDE Marlube finish options, this AR-15 magazine offers superior strength and corrosion resistance in challenging environments. The chrome silicon wire spring and anti-tilt polymer follower ensure smooth feeding performance, while the machined feed lips deliver a precise fit for added reliability.