GHK G5 12" Carbine kit + 1 Joule bolt test
(12吋卡賓套件+1焦耳飛機) Muzzle Velocity (m/s) 初速: 1) With 8KG green gas: 72 / 81 / 80 2) With 12KG green gas: 92 / 108 / 107 / 104