antique remington arms co. shotgun...help

[clarthom]

background (drama):
My dad got this shot gun as a part of some trade and it needed a repair. He brought it to an old gunsmith friend of his where it sat half way disassembled for about 3 years. I asked about it and he told me I could have it. I got it from the gunsmith (after many months of trying) and now I'm trying to put it together and make it a complete firearm.

Situation:
I don't know much about this shot gun or where I can find any parts it will need. so I need to;
1) identify the gun
2) identify what is missing
3) locate parts

Any help would be greatly appreciated, if i need to more info about the gun itself please let me know and i'll tell you all i know(not much lol)

Pictures to follow




underside of rear of barrels
#s: 366975



#s:366975, 642, 7




#s:642 6975

#s:Q366975


Markings: GE BOSTROM

#s: 366(hole)975



Something is missing?



Working to make this spring fit

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[deadeye]

Looks like a model 1900.

 

[clarthom]

and from what i just found on remington.com, it looks like this is a 12 gauge KED version, meaning it has 2 strip Damascus barrels with auto ejectors

 

[clarthom]

any ideas about the missing pieces?

 

[deadeye]

Check here....Numrich Gun Parts Corp. - The World's Largest Supplier of Firearms Parts and Accessories

and here....All Available REMINGTON ARMS COMPANY SHOTGUN REPAIR PARTS;Bob's Gun Parts Shop, Bob's Gun Shop, Po Box 200 Royal Ar 71968. Remington 11-48  Automatic Shotgun Parts,Remington 1100 Shotgun Parts Remington Pump 870 Shotgun Parts. Remington Automatic Mod