Brownells M4 Carbine Stock Wrench

Brownells M4 carbine stock wrench made by Rock River Arms Quickly, easily remove old extension tube to install new-style A4 stock Spanner has 3 lugs to fit the castle nut Non-slip fit to apply the correct torque Rubber-coated handle Cutout fits receiver extension tube to remove A1 or A2 stocks Steel with parkerized finish 7-5/8″ long