both equally v3 and v4 of the LDT HK416 are excellent, nevertheless The only shot in HK416 v4 might be far more steady due to the mosfet installed. each versions supplied by AKgelblaster will come with metal https://iwanfdxq795572.getblogs.net/60607490/hk416d-gel-blaster-with-smoke-wolf-for-dummies