There is a ammo clip for a J C Higgins shotgun model 58324 16 gauge. You can buy it as a replacement part.
I would check at Numrich Gun parts corp.They may be found on the web.
I have this model gun however i know very little about it. EBAY e-gunparts.com is an awesome parts site
website is called Numrich I just got one off of there for the exact same gun. Find your gauge and model and it will be there its 40 but worth it.
numrich gun parts
this is a bolt action shotgun
I would start at Numrich Gun Parts Corp.
Assuming you mean the Stevens Model 238 bolt-action, I have magazines. email@example.com
Mossberg or Savage/Stevens? Any particular model? firstname.lastname@example.org