MARLIN'S WEBSITE! about $13.00 each.
6.35mm is the European designation for .25 ACP (.25 Auto)
Without more information, the question can not be answered. For example, what do you mean by "clip lock"?
ammoclip.com $18 plus shipping The Glenfield model 25 was made by Marlin as the model 80
how much?
No. It needs a magazine.
Try e-gunparts.com, gun shops, gun shows, want ads, internet searches.
Gun shop, gun show, pawn shop, want ad
Check the website at gunpartscorp. The brand is Galesi, caliber is .25 Auto, but you will need the model number. The part is called a magazine, not a clip, and they are about $40.
Find a gunshop and ask for help
Try e-gunaparts.com
It was not designed for 25 cal ammunition.