M1100 help
 

Posting this for friend

So my friend took apart his maruzen m1100 and is wondering if he can get confirmation of the piece that holds the shell door because hes not sure if the piece he is putting on the shell door is the right one because the shell door rubs once the plastic receiver goes on. Pictures of the trigger mechanism would be great

Look at the exploded diagram in the manual.

I don't have the manuel for the gun because I bought it from someone else, If you happen to have one could you take a snapshot of the exploded diagram for me