A water gun can be attached to a hose in many different ways. Most water spray guns have ½” BSP or ¾” BSP female thread inlet. Quick release couplings, swivel couplings, fittings (with anti-kink spring hose tail, with rubber hose protector) can be used, where needed. They can be mounted to the water supply hose using a clamp or permanently crimped with a ferrule.