SS 7.5T Select Match Blanks donated by Shilen. Chambering reamer used is a custom one based on 80 SMK boat tail above shoulder. 20 blanks were delivered, will just do 10 now and the rest after my Cataract surgeries.
Barrel extensions are the competition variety, oversized OD for better fit, 0.920 long, 20 TPI instead of the M16 16 TPI
Contoured ones still need to be cut to 20, then threaded to 5/8x24 to use the A2 BO flash hider mainly for crown protection. Never been a fan of 1/2x28 even on .224 bore.
Barrel extensions are the competition variety, oversized OD for better fit, 0.920 long, 20 TPI instead of the M16 16 TPI
Contoured ones still need to be cut to 20, then threaded to 5/8x24 to use the A2 BO flash hider mainly for crown protection. Never been a fan of 1/2x28 even on .224 bore.