Buy a "Chapman" tool set, used by professional gunsmiths. Assorted bits from flat blade, phillips and yes all the hex sizes from sae and metric sizes. Extremely well made, never broke one in 30 years of use. Fit the screw heads precisely, little to no play. Comes in a kit with a couple different handles. All flat blades are hollow ground to prevent slipping. Availuable thru Brownells and other quality tool sources. Once you use these, you won't want to use anything else
Upvote 0