Rarest is the irwin pedersen made 3000 or so then contract pulled I have 2
S'G' 223,620
rock ola 228,500
standard products 247,160
saginaw gear 293,592
IBM 346,500
quality hardware 359,666
National postal meter 413,017
Underwood 545,616
winchester 809,451
Inland 2,084,189
inland (t3) M3 carbine (vampire infrared night vision and scope) 811 I have 1
Inland m1a (folding stock) 140,000
winchester (t3) M3 1108
Winchester m2 17,500
Inland m2 400,000 est records are incomplet for june,july and august 1945
THEN you can get into some of the strange marked recivers the contractors bought each others to make quota and just restamped them
you get Inland lined out restamped rockola
IBM made by auto ordinance (marked A.O) under IBM
UN-Quality (union switch and sigional and quality hardware) I have 1
Commercial Controls (national postal meter changed names in may44)
there are a few others too
Inland and winchester were the ONLY 2 companies to produce m2 carbines many were hand stamped "2" some over the "1"
for korea/Vietnam many other m1 carbines had the FA parts added to make them m2's some were restamped m2 but most
were not
The m1 and m2 recievers are the EXACT same with the exception of the "1" or "2" stamp