Crusader Forward Assist Button for VFC M4 / Umarex (VFC) HK416 GBB Airsoft Sniper Rifle Magazine Suitable For KJ Works KC02

Suitable For KJ Works KC02 Series Airsoft Gas Blow Back GBB Rifle

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Crusader Forward Assist Button for VFC M4 / Umarex (VFC) HK416 GBB Airsoft Sniper Rifle Magazine Suitable For KJ Works KC02An upgrade Crusader Forward Assist Button of the VFC M4 HK416 gas blowback Rifles. For those that do not know, sometimes the bolt of your weapon returns forward but not the whole way. In the case of a real firearm this can cause a catastrophic blow out or at least minor damage but in Airsoft it will at least form a poor seal and fail to fire your BB properly. If the bolt goes forward, it slides a BB into the chamber but if it fails to go into a fully