Angry Gun Super Recoil Kit for WE GBB M4 Series Cocking Handle buffer and drive spring to

buffer and drive spring to refurbish M4s or buying a completely new and complete HK416

4V large type battery (small plug) inside the rear stock

Shorter barrel and folded rear stock makes the length shorter and fit for the closed quarter battle

Impressive AK AK-74U Airsoft Gas Blowback Rifle by GHK

300rd Loading High Capacity M4 Style Magazine

Angry Gun Super Recoil Kit for WE GBB M4 Series Cocking Handle buffer and drive spring toAngry Gun Super Recoil Kit Stainless Steel construction ROF Adjustable Design for upgrade your Original Recoil Kit Able to Increase the Recoil force Suitable for WE M4 Series Airsoft Gas Blow Back GBB Rifle