Product Review
Tufforce swivel stud fit on M-Lock System for sling or bipod connecting....... 1 stud and 1 special M-Lock nut in package with standard screw M4, standard, nut's thickness Designed to leave a margin to file down for fitting all hand guard's thickness in installation. Or add a small washer out hand guard, in which it should be tighten up. Steel, Black oxide finished