Our new Vented muzzle brake for the M-11 & Mac-10 9mm is made of machined steel and finished in black oxide for durability. It has SIX machined, slotted ports and adds a custom appearance to an M-11 or Mac-10 9mm . It is nearly 3" inches in length and weighs only 4.5 ounces. It has a thread of 3/4x10. (gun & other parts sold separately)
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