Not quiteSTI uses RIA frames for their Spartan series.
The difference is that the folks working on the STI guns are trained, by STI folks, to fit the STI parts in the manner STI wants
Not quite
RIA is produced by Armscor. Armscor also produces the frame and slide for the STI Spartan...it is like Ruger making S&W 1911 frames
Both are assembled at the Armscor factory in the P.I. The difference is that the folks working on the STI guns are trained, by STI folks, to fit the STI parts in the manner STI wants
He's a member hereHere is a good review of a LOT of different 1911s. The author has pretty high opinions of the STIs.
He must have also won the lotto, as he owns all these pistols..