Per the thread title; I’m trying to determine whether there is sufficient “meat” on the top of a Model 439 slide to safely mill in a dovetail like the Gen 3 slides had? I ask because I read that some Gen 2 parts were still being used up at the beginning of Gen 3 production. The latest project on my bench is a 439 slide I hope to upgrade with better (perhaps Trijicon?) sights and other details to graft onto a 639 project. I’ll measure for myself of course, but I’m wondering if anybody has already done it?

TIA ~ Froggie