Ruger Mark IV Safety Screw – 10.9 Grade Steel (All Models)

Safety Screw for ALL Ruger Mark IV 4 Pistols 10.9 Hardness *H5*

WILL NOT FIT ANYTHING BUT MARK IV
FITS ALL MARK IV FRAMES
These use 1.5 mm Allen Driver.

Part #46 on Standard Mark IV manual, #31 on 22/45