Great mag! - Lancer L7 Advanced Warfighter Magazine, .308

I use these for my aero m5. Someone on here said they didn’t work with their lower but mine seem to fit just fine. They are hard to fit when fully loaded on a closed bolt but that’s to be expected. They drop free effortlessly which is nice. The only con is if I have to think really hard and that is that the metal feed lips are not coated so they rust with moister in the air. Also they are very heavy compared to pmags but again these two things aren’t big deals. Still well worth it