I have 13 M1 carbine aftermarket mags for sale, (SPF - two are marked M2 - SPF) and 13 are marked Made In The USA.
The M2 marked mags are SPF-
$15.00 each plus shipping and insurance to the lower 48. Sold only where legal, you know your laws
First " I'll take it " followed by an email to bogiem at Comcast dot net gets it.
Do not send IM's, I receive to many and have to delete them to keep the inbox from being full.