I have two Cobray Marked MAC 10 Magazines for sale in 45ACP.
The 30 round magazine is a M3 Grease Gun Mag. It has the Cobray Logo stamped on it plus the following: SPW GL C-153427.
The longer Cobray Magazine only has the Cobray Logo stamped on it. No other markings.
Several months ago I sold a SAP MAC 10 that I purchased from a friend with health issues. The seller of that MAC sold his house and found these magazines in his basement. He forgot he had them. He told me he purchased these in the mid 80s at a gun show in PA and never used them. The finish is spotty with rust on both magazines. There are old labels on these magazines that say MAC 45.
Price is $60.00 for both magazines. Shipping is extra.
If you want me to send you these pictures please IM me with your email address.