The HK RMX Lower Kit is a seamless and flawless upgrade kit for your goggle system. Malleable rubber, increased ventilation, and superior comfort are just a handful of things that you get with the RMX. With the 4 posts on the face plate, the lower part just snaps in securely. The RMX Lower Kit is also ASTM certified, so there's no worry about protection when you're playing airsoft or paintball!
