Clean it. Try different ammunition. If neither works, find a gunsmith
if you want it to be it is semi auto
Need serial number please.
25-125 usd
pretty sure 20 or 21 inches
The SKB M-7900 is a pump shotgun not a semi-auto.
Which make & model??
No, it is a bolt action.
I don't believe there ia a model 19, a semi-auto? Possibly a 16? Is it a semi-auto 6 shot?
its a Remington model shotgun(semi auto)
Your winchester model 50 semi-auto shotgun was made by winchester in 1956.
yes
Yes