Features: Improved feed lip geometry allows better compatibility with more receivers Over insertion tab is larger to increase mag retention Standard 30rd capacity Built-in coupler allows multiple mags to be connected together in seconds with no tools or extra parts No tilt follower with reliable bolt open on last round Clip on dust cover to keep dirt and debris out during storage Fast and easy disassembly for maintenance without tools via ETS' specially designed floor plate Ergonomically designed floor plate makes it easy to grab from mag pouches Magazine grip ribs gives you superior control Lifetime warranty Advanced Polymer Benefits Extreme Impact Resistance- won't crack or break when dropped Very resistant to harsh chemicals Superior heat, cold, and UV resistance- won't become brittle over time even when exposed to harsh environments or extreme cold Translucent body- allowing you to see your ammo count and type Creep resistant- the feed lips and body won't spread when being stored long term even when fully loaded