Original Item: Each German MG 34 machine gun was issued with a number of Mündungskappen MG to keep dirt out of the muzzle of the gun. The covers are made of rubber or rubber-like flexible material and fit over the mouth of the flash hider. Disposable items like this rarely survive, so these are rarely seen. IMA has only a few. Protect your MG 34 from the mud and snow of the front lines, and complete your accessory set!
See the Mündungskappen MG in MG34 – MG42 German Universal Machineguns by Folke Myrvang, Collector Grade Publications 2002, page 423.