Hi, just idly curious if there was ever a grenade launching muzzle device of some sort issued for the No. 4 Mk 1 family of rifles in British and Canadian service during WWII, or, if rifle grenades were needed, a different variant of the weapon such as wire-wrapped SMLE, etc., would have been used. I've seen the ENERGA launchers for the No. 4 Mk 1 but as I understand it, those are a post-war development. Thanks for any insights!