ETS mags wont crack or break, are resistant to heat, cold, UV and harsh chemicals and wont become brittle over time. Their mags come with enhanced features like non-tilt followers, creep-resistant feed lips and clear body allowing you to see count and ammo type, leaving nothing to chance.Features :Improved feed lip geometry allows better compatibility with more receiversOver insertion tab is larger to increase mag retentionStandard 30-round capacityNo tilt follower with reliable bolt open on last roundClip on dust cover to keep dirt and debris out during storageFast and easy disassembly for maintenance without tools via their specially designed floor plateErgonomically designed floorplate makes it easy to grab from mag pouchesMagazine grip ribs gives you superior controlLifetime Warranty