King Arms Hard Hop Up Bucking

If you're working on a beastly DMR build and you want to launch heavyweight BBs at a crazy distance, you should check out this HOP rubber! The King Arms Hard Hop Up Bucking is constructed from dense rubber, making it ideal for DMR AEGs; it is not designed for full auto assault rifles. This HOP rubber will improve the air seal and also includes a HOP spacer. It is compatible with most standard AEGs.