As 2Holer said this gun is striker fired rather than having swinging hammers. The 311, 530, 5100 etc are all hammer fired. You can differentiate between the two actions from the outside. Notice the two pins through the frame, on this one the rear (sear) pin is higher than the front one due to the different location of the sears for the strikers. On the hammer fired one the rear (sear) pin is lower than the front pin, very near the bottom of the frame.
I had a model 315 in 20ga many years ago labeled Central Arms Co & it didn't even have a walnut stock, probably Birch, stained. It shot well enough but at 7lb & tight choked I really had no practical use for it & traded it off.
As I recall on the hammer models the front pin serves as pivot for both the hammers & the cocking lever, while on the striker fired models it is only for the cocking lever. Both have coil mainsprings, but in different locations of course.