Need help Identifying this magazine

[Tc343]

Got 2 of the exact same magazine. No markings on it, appears to be a larger rifle round. Feels very well made.

Its 3 1/4" long roughly 3/4" wide

 

[netsecurity]

It looks really big in the photo, as in 50BMG. Is it six inches long?

Maybe put something in the photo for perspective.

 

[fireman1323]

mag

Looks like maybe 12 gauge shotgun possibly marlin slugmaster

 

[HIPOINTRUGERLOVER]

could be a marlin goose gun (12 gauge)

 

[Colt556]

Marlin or Mossberg 12ga mag would be my guess.

 

[Mellow]

Mossberg 2rd 12ga?

 

[Tc343]

Thanks guys turns out it was a Mossberg, its a 16ga though.