I have a Model 1400 MkII that I bought in 1970. SN# is N473xxx. The gun has not been used much and has been stored after encountering a operating problem. I have Googled this issue but haven't had much success.

The gun will not feed shells from the tube. I manually cycled a snap cap from the breech and the next round did not leave the tube. I am unsure of the mechanism that releases and then moves the next round up into the breech and what might be broken there to prevent that.

I have not attempted to load and fire the gun manually. I used the snap cap to verify that the firing pin strikes the shell when the trigger is pulled.

The gun has sentimental value and for that reason I want to get it fixed.

Any and all suggestions much appreciated.

Question regarding the forearm...the three spacers that I see in some schematics appear to be missing. Not sure if the Mk2 used spacers or not. Are they necessary?

What type of ammo are you trying? My model 12 hangs up with Federal’s and estates but does not with Winchester AAs.

I haven't tried to fire the gun so I can't answer that. Sorry!

I wouldn’t trust a plastic snap cap to reflect how a gun will feed.

Happy to report that after putting in a new trigger assembly, the gun operated flawlessly today at the range.