Here are all four I built. The two on the left are 10mm, the one on top is a 21 slide with a 10mm conversion barrel. It too can shoot 45 acp with the right barrel in it. It has been broken in with 400-500 rounds through it. The 10mms are running 20lb recoil springs, the 45s 16 lb springs.
I bought several different weight recoil spring set ups to see which functioned the best. I’ve got a small tool box with various parts in it fro these Glock clones in case I need to tinker with them at the range. It’s been fun but off and on this past year because of a heart procedure, radiation treatments, cataract surgery, hand surgery etc.
Been keeping the docs busy! All told I probably have $2500 or so tied up in those 4 handguns, not including ammo.
Like I said I still need to tweak trigger on the compensated green dotted 45 and shoot the others to insure reliability!
ETA I used a sharpie to mark the base plates in the mags to differentiate the 45s from the 10s