I wanted an Argentina Colt but never found a deal on one. I think they are all
produced about the same parts. I'm pretty sure everything will fit unless you
buy a Llama. Then they have some different stuff. So far I have changed the
slide spring. Mag catch, and the hammer. All were direct drop in parts. Might
eventually do a Match grade barrel just for fun.

I have owned my ATI 45 government pistol for a few years now. I am really satisfied with it. Accurate, well made and shoots anything I put in the magazine.

The 1927 model Colt for Argentina is basically a 1911 and parts are the interchangeable, but the hammer and grip safety may have a different external profile.

The Argentine Ballester Molina is totally different, but the magazine will interchange.

Star and Llama are different for sure.

"Match grade" barrel is a marketing label- JMHO.:D

Don some of them guarantee an 1 1/2 group at 50 yards, from a ransom rest. I don't
have one and they are probably hard to carry concealed ,but sounds good.:) Like hold
on while I setup my Ransom Rest.

I'll bet any decent barrel, set up as a target rig, would do that from a Ransom rest!

You know the key to 1911 is in the barrel/bushing ; barrel hood/slide; and link/foot clearance and fit to achieve repeatable positioning.

After that it is just hold 'er steady!:D

Probably so Don. I doubt if I could get much better than this one now.
We went again and with the three types of ammo it shot them all well.
The Lead reloads shot best but weren't far ahead of the factory Blazer
or the Magtech. None skipped a beat. The one partner gave me 3 new
stainless Colt Mags.
I did find out having a pistol that shoots really well is almost as good as having one
that shoots really well and everybody wants it.:)