The MP-18 was the first sub-machine gun used in combat and was introduced during WWI. The circular fluting of the barrel on the MP-18 is an iconic machine gun barrel design we couldn't resist putting in to ring form.
Each ring is made to order from our Ultralight Nylon materials. We do not stockpile inventory or mass produce products, we make each ring to order right here in the USA. Please allow up to two weeks to deliver your ring order.