Gentlemen, look at the first pic showing side view of the frame. Nota Bene; the positiopn of those two cross pins through the frame. The rear pin sits higher than the forward one. Every Stevens 5100, 511, 311, Fox B etc I ever saw had the rear pin lower than the forward pin. Looks like the Stevens 315 to me. Betcha if you pull the stock it will have spring loaded strikers with no hammers. I had one of these once labeled Central Arms Co. It shot well enough, but had uncheckered hardwood with a walnut stain & weighed right at 7lbs in a 20ga. Traded it on something more desirable.