Lee Enfield mud flap, Flanders muzzle flap. Made of sheet metal, with a spring-loaded flap. Rare and much copied accessory. Here it is a genuine one, surface oxidation. No visible markings. Lee Enfield Muzzle Protector, "Flanders Muzzle Flap" Sheet metal protector with spring-loaded cover, fully functional. Rare and often copied accessory-this is an authentic example showing surface oxidation. No visible markings.