Angry Gun Adjustable Stainless Steel Super Recoil Kit for WA M4 GBB Rifle

Angry Gun Adjustable Stainless Steel Super Recoil Kit for WA M4 GBB Rifle Stainless Steel construction ROF Adjustable Design for upgrade your Original Recoil Kit Able to Increase the Recoil force Suitable for Western Arms WA / G&P GBB M4 Series Airsoft Gas Blow Back GBB Rifle