Well built - Kaw Valley Precision OPMOD Mega Hybrid-K Linear Compensator

I started with this on the rifle, so I would have to remove it to see what the difference would be. I bought a brass washer from Ace Hardware that had the same OD as the Compensator. I opened the ID with a Dremmel to fit over the barrel threads and used a file and sanding block to set the width to get the top exhaust hole in the right position.I am very happy with the product.