Leaderboard

I assume the extension you bought was stripped? You have two options, you can buy the flexible ring to install or you can modify your old receiver extension to get the flexible ring out. Do you have a Dremel with a cut off disc to notch the raceway? I guess you have a third option, you can send me the extension and I’d get it out for you, and install it in the new extension if you want. Just cover the cost of return shipping. Buy option: https://www.midwestgunworks.com/page/mgwi/prod/70071

I received a couple of messages on where I got the Nord lock washers from. You would be looking for a 5/16" Nord-lock washer. They come in steel or stainless steel. I just got the steel version. Here's where I got them. https://www.boltdepot.com/Nord-Lock_washers_Delta_protekt_plated_steel.aspx I've been using the same lock washer for quite some time now and it holds solid. When I recently unscrewed my stock the nord washer separated into two washers (they are two washers stacked on top of each other). I just put them together and screwed the stock back in. No issue. It still holds firm. You may want to purchase several. They are only $1.10 each.