GBB Flat Hop Up Rubber 80º(4 Pack)

“GBB” type, flat hopup rubber, 80°, pack of 4 Initially designed for the TAC-41 “GBB” hopup, this hopup rubber can fit inside most of airsoft guns using “GBB” hopup rubber. Transparent silicone for easier installation, red color, 80° hardness, 4 pieces.