VFC Gas Magazine Valve Base For M4/ VMAG/ HK416 Gas Magazine

Key Feature Metal Construction Airsoft Magazine Valve Base Design For Replace the Original Parts Suitable For VFC M4 20 rds/ 30 rds Series Airsoft Rifle Magazine Valve Base (V2/ V3) Also Fit For VFC VMAG Airsoft Gas Magazine (V2/ V3)/ HK416 V2 Gas Magazine