Nowhere that I know of.
gunbroker.com Numrich gun parts and gunclip.com
At Numrich gun parts : it is the same as a Squires Bingham 1600
No known published sn data.
Try gun shows, gun shops, pawn shops, garage sales, want ads, for sale ads, estate sales, ShotGun News.
you can find them in the numrich catalog or there web site e-GunParts.com
Numrich Gun Parts Corp.should be able to help you.
http://www.e-gunparts.com/
You can find schematics for a John Deere X324 lawn tractor in the operator's manual that came with the machine. If you don't have the manual, you can usually find it on the John Deere website by searching for the model number. You may also find schematics in a service manual or by contacting a John Deere dealer for assistance.
Try e-gunparts.com
looks like you might find it here: http://www.a-1appliance.com/lookup/107531/665700
You can't because there is no such thing as a "gun clip" for the weapon you mention. You can, however, find a ammunition magazine if you search gun shops, do internet searches and try looking at e-gunparts.com
Try an appliance parts website. Usually they have schematics and a breakdown of parts for appliances.