Silverback 50 degree Hop Up AEG Flat Rubber For MDRX Airsoft Rifle

Silverback 50 degree Hop Up AEG Flat Rubber For MDRX Airsoft Rifle Rubber Construction AEG Airsoft Hop Up Rubber 50 Degree Hard This rubber can fit inside most of airsoft guns using ?AEG? hop-up rubber 5 dot lips design for bbs feeding, flat contact patch, similar to Silverback SRS-TAC41 and GBB hop-up rubbers Suitable For Silverback MDR-X Series Electric Gun AEG Airsoft Rifle