Original Item: This stop nut has a slot to accommodate the lock screw for Martini Henry MkIII, MkIV, IC1 carbines and .303 breech blocks. Due to machine tolerance variations, fitting is usually required, as would have normally been done by the armorer.
Original British Martini-Henry Rifle Breech Block Stop Nut for MKIII, MkIV & IC1 Carbines
$19.95