Contact a gunsmith and ask for help
You can find complete manuals @ Cheaper than dirt or J&G that can be very useful.
I've been looking all over for an Iver Johnson's M1 Carbine Enforcer. If you would be interested in selling yours, please contact: admin@barbil.com Thanks!
Planefield
Around $500, depending on condition.
Try oldguns.net
winghester 30 cal m1 2337333
Name of who made it.
It is worth between $200 and $2,000.
IBM was one of the makers of M1 Carbines- along with companies that made postage meters and juke boxes.
100-1000 or more depending on specifics
The price can range anywhere from $500 to over $2000, depending on specifics.
made 1915
Between May 1943 and February 1944.