Allen Engineering Mk12 SPR collar and adapter - SHOP DEMO
This was a new complete set, and has been used in our shop for testing fit of barrels. It will have handling marks and some surface rust. It has not be permanently affixed, nor shot. Nothing a little oil will not cure. In fact, it will be shipped oiled. Obviously, this is a near a one of a kind, so if we are sold out, we will not have back in stock for a few months.
Perfect replacement for Ops Inc. #12, fits AES-5. This is for the Mk12 clone build, as well any other great rifle build.
Ron Allen builds these one by one by hand. He was the engineer that created the Ops Inc. collar and suppressor. Well worth the money for any precision 5.56 mm rifle build.
Included is the complete kit: Collar, flash hider and thread protector.