joerowlands
Member
Thank you. I'm sure it will be worth a lot of bucks one of these days.
Your IBM receiver was manufactured, for IBM in WWII, by Auto Ordnance(AO), a sub-contractor for IBM. IBM also manufactured their own receivers but, sometimes, in order to meet production schedules, sub-contractors were needed. Other, prime manufacturers of the M1 carbine used, at times, sub-contracters to manufacture receivers and other parts for M1 carbine production. Both your IBM and Winchester M1 carbines were refinished at some time. Your early Winchester originally had the "flip up" rear site which allowed WINCHESTER, on the barrel, to be completely seen. When it was overhauled, the later adjustable rear sight was installed, which is what is on your carbine now. If either of the stocks, on your IBM or Winchester carbines, lack the stamped crossed cannons on the right or the circled P beneath the pistol grip, it's more evidence of being refinished.I just unpacked my other carbine - its # is 3860171 - has a marking of "AO" on the receiver and an "H" in a crest on the site - the bolt also has an "X" on it - under the rear sight the last letter (and only one I can make out appears to be a "P").
Only Inland originally produced M1A1 carbines with the folding, or paratrooper stock. There were two production runs of M1A1 carbines using early type I and later type II stocks, so a certain range of Inland serial numbers would be correct for the type I stock and a later range of Inland serial numbers would be correct for the type II stock. Any Inland serial numbers outside both ranges would be incorrect for a M1A1 carbine. And, an original M1A1 carbine stock, by itself, is worth more than a standard Inland M1 carbine. Be careful, there are a lot of repro M1A1 stocks, out there, being sold as original USGI. You have to know what to look for.If I could find a gun show GI folder I'd change over the Winchester. I'm thinking the probability of an original GI folder (which I don't know if it was marked by Winchester somehow is probably low).