why not 9mm? it's cheaper to shoot and 5.45 ak74 kit would be perfect for it.
what are you planning to do for a front sight/gas block. machine it from scratch, buy one that looks similar or your build is not gonna be that close to original and you'll just use whatever?
also are you gonna do blow back or locked breech? skeleton stock?
I own .45's .
I only own one 9mm a ww2 take home p38 I got passed down from my grand pa I don't shoot a lot . So I have more 45 on hand .
Also I've been building a scratch built grease gun clone . So I had mags.
I did a job for some one and worked out I had enough for the Hungarian under folder kit so I said f it I'll build a ak in 45.
I'm not 100% sure how I'm gonna build it up.
Could cut the front sight up and weld it to a gas block . And later sbr.
Mod the parts for the thicker barrel .
Buy a combo block .
Scratch build it .
Hk sight mod for longer sight raduis.
Galil top cover.
Tactical it out with a custom top rail system .
Bulpup it.
I haven't made up my mind yet.
I was gonna do a screw build to test feed the action with a rough turn barrel then once I get it feeding and shooting go from there.
Then rivet it up .
I could allways do a quick charge barrel .
There's a mag block adapter for the mac10 for 9mm so I could also do that .
I have a lot of options and can't make my mind up .
And 45 is bad ass.
Blow back .