American MK18Mod1 short barrel rifle

American MK18Mod1 short barrel rifle

It is a short barrel M4A1 retrofit kit designed by the US Navy Ground Weapons Development Center. It is based on the modular functionality of the M16 series and adapts the weapon to the needs of close combat by replacing the upper receiver and short barrel. Specially using the MK18RISII guide rail from Daniel Defense Company in the United States. Due to its widespread use in special forces and frequent appearance in film, television, and games, it has become a model that gun enthusiasts are enthusiastic about replicating. The original design intention was to meet the mobility and rapid response needs of special operations units in indoor close combat environments.