Looking at the top right grip panel screw, it appears it is not a slotted head like the other screws. Does the top left screw go all the way through to the other side?
It is my recollection (never mind both mine have been gone for the better part of four years) the fastener is a slotted screw, and does not go all the way through.
We'll consider this as a memory test to be confirmed or denied when someone who KNOWS what they're talking about comes along!
Just got it home. The top left screw does go through to an escutcheon on the other side. The 4th Model, one of 1870 guns (IAW SCSW) is a real work of art.
Hi friends,
I know this is an older thread, but I have some information that might help.
The three machine screws used on the Straight Line grips are a size #5 with a 44 threads per inch cut. The head is referred to as a Fillister style head. It's kind of shaped like a round cake, with a cut for your screwdriver blade.