High Pressure Air (HPA) Guns; Been using the M3 grenade launcher on the HK416 and i've noticed whenever i load it with a 40mm grenade and then switch back to the rifle and then go back to the launcher the grenade that was loaded in is gone I think i noticed this on a FN SCAR aswellUS Marines in Afghanistan practice firing the M3 Grenade Launcher attached to M4 CarbinesFilm Credit SSG Teddy Wade
S T Motiv Daewoo K1