“Not cheap for a barrel nut but required for the handguard I chose, and worth it for the sturdy attachment method.
NOTE:
A Wheelers armorer's wrench from Sportsman's Warehouse fits the BAR nut perfectly and was only $30!”
“Bar nut works better than the PSA barrel nut. I would like to see more slots for the gas tube to do away with the spacers. Otherwise, an easy installation.”