Rail Adapter Sleeve

I have a Model 60 from 1977. I'm not sure if this adapter is for the newer model 60s, but it didn't fit mine very well. The adapter was too loose, even with the screws tightened all the way. When the screws are tightened all the way, the bottom rail ends up being to skinny to fit any accessories on it, so I made this sleeve that goes inside the adapter, to make it a snugger fit, while making the rail wide enough. I do suggest using horizontal size compensation to make it fit better, since the sleeve might be too snug printed as is, depending on your printer and settings. I used a Horizontal size compensation setting of -0.50 and it fit perfectly. I also added my version of the 3 rail without the sight relief. the only difference in mine is that I added reliefs for M3 nuts and M3 button head hex screws.