i have no advice but just wanted to say all you that DIY the whole FGC-9 are on a dif level and i respect tf out of your dedication.

took me a few min to figure out how to post as well as how to see the newer stuff but once you do it makes sense and makes you feel kinda silly for taking any time at all to figure it out lol. impressed with the work yall done so far

.380 is gunna be one of the easier ones as u just need to shorted the 9mm a tiny bit, ill prob do that one after the 5.56 since it should be a quick one

harlot is also a good first build imo, very basic but gives you some understanding of tolerances n such. n tbh the harlot can be kinda addicting once you get them working, so many variants and you gotta have em all