Name this part please

[88 man]

I bought a few boxes of parts last year and slowly going through them.These were in one box and I don't know what rifle it's for.There hinged floor plates but for what ? I looked at the Winchester 70 and Remington 700 and there not the same.Any help would be great !
Thanks

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[Why not?]

It is the cover for a cartridge trap. The trap itself is usually metal, is inletted into the buttstock, and holds three or four cartridges for the rifle.

Ted

 

[guntech]

Usually they get inletted into a custom stock, sometimes into factory stocks and then reshaped and refinished.