Quote Originally Posted by RCS View Post
The shallow "v" on top supports the open prong flash hider for removal or installation, cut out on left side is for the birdcage flash hider and square hole in center is for
torque wrench and I forgot what the cut-out on the right is for ?
Aha! Took me a little while to figure that out, but then it hit me that the shallow “v” and the two decorative holes together formed a “Y” shape, which fit perfectly over the 3prongs. Thanks.