Durable polycarbonate construction and heavy-duty elastic bands withstand heavy use Compatible with M4 and M16 magazines Open top system reduces reload cycle time Elastic band firmly grips magazines and can even be placed upside down Mounts onto any MOLLE/PALS 1 webbing system In the Box 2X M4 Magazine Pouches Specifications: Brand Airsoft Megastore Armory Build Polymer Color CAMO California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov