Auto Ordnance 1911a1 Serial Numbers
Get the serial number and call Karh Arms. Find out when it was manufactured. It was Karh that started offering their version of the AO1911A1, as discussed above. IIRC Karh bought AO back in 1999.
The version that has gotten all the bad rep, and deserving so, was originally made by Numrich when they owned AO, it was a parts bin gun POS. The old AO use to cast their frames in Spain. A 1911 forum member reported, after speaking to Karh, that the slide and frame is milled in factory in Worchester Mass from a solid bar of steel right here at the Worchester Mass factory from steel. A quick google search. Found a review from 2007 for the newly introduced Karh AO1911A1.' A few years ago the brand was owned by Numrich Gun Parts Corp. 
West Hurley, New York.
El-p cancer for cure rar 320. Quality of Auto-Ordnance firearms under Numrich's stewardship is generally regarded as questionable. Kahr Arms bought Auto-Ordnance in 1999 and, from what I understand, the quality was improved upon. .This is an Auto-Ordnance “Thompson” line of 1911 style pistols. Thompson pistols are still being made under their current owner Kahr Arms.
Auto Ordnance 1911a1 Serial Numbers
Serial number obfuscated. Auto Ordnance Corp. Catalog Page. 5 inch round.
Auto Ordnance 1911 Pistol Parts
This particular one pre-dates that acquisition and is sometimes called a “West Hurley” Thompson, named after the manufacture city of its time.' In its early years of production it was made from military parts on a Essex frame and slide with a commercial colt barrel.