S&W M&P15 Castle Nut Removal
HELP!!
Hey guys! I'm trying to help a friend install a DD Rear Receiver End Plate on his M&P15, and can't for the life of me get the castle nut off!
I've never had a castle nut so difficult to remove! Does S&W use some type of thread locker? I've used a RRA stock wrench and a Brownell's Stock wrench. I even tried a breaker bar with the Brownell's wrench. I mounted the lower in a Brownell's/Peace River lower vice block. The Brownell's wrench is taking peices off the nut!
Any tips or suggeestions those of you who have removed the castle nuts off of S&W's can provide is very appreciated!
Thanks!
-RD62