SEI M14 Thread Adapter to 5/8x24
This Smith Enterprise Thread Adapter replaces the standard castle nut flash hider and dovetail with a simple screw-on thread adapter. Internal threads match M14 barrel threads. External threads on front end are standard 5/8x24 threads for .308/7.62 muzzle devices, including flash suppressors, muzzle brakes, and sound suppressors. Rear of device is recessed so that it covers the groves in the barrel for a clean look.
SEI Part# 2000A