Best option for muzzel device timing - JP Enterprises Double Crush Washer

First these are highly quality and well crafted crush washers for the AR15 platform to install muzzel devices easily and properly. Over the last few years I've had to install & Uninstaller about half a dozen breaks & comps and everytime I've used one of JPs double crush washers and MI Upper Receiver Rod to quickly & easily install these devices with perfect alignment & torque. These washers can be installed anyway there's no front or back and they also center themselves and can provide up to 1.5 rotations if needed. So no matter where your device ends up at the end of hand tightening there's always enough rotations left to get it correctly timed. I've never hand to do more then 1 full rotation and most times it was a 1/2 or 3/4 turn so it wasn't a struggle. IMO these are the best & easiest option available and I've probably bought 6 or 7 over the past few yra.