Indian Surplus Enfield Grenade Launcher Cup. These examples are in good to very good surplus condition and will have worn paint but are completely functional. Designed to clamp onto the endcap of an Enfield No.1 Mk.III. This design dates back to WWI and could be used to launch a Mills Bomb on enemy positions (including other grenades). These cups are WWII and post-WWII production. Most appear to be RFI marked. These screw onto the end of your rifle, clamping to the nosecap, and allow you to use blanks to launch projectiles. These actually fit tennis balls really well. Pair them with blanks and have yourself a time! DO NOT ATTEMPT TO FIRE WITH LIVE AMMO! Perfect accessory for your Enfield!