I don't want to derail ra6317's post, but I sent my 935 back before last hunting season and I called them every week to keep tabs on their progress. So about 3 weeks later they sent my 935 back to me with zero of the problems addressed. The only paperwork in the box was an invoice that said:
"M935 26DR MATTE"
and this was repeated twice...
then it said,
"M935/930 MAG FOLLOWER BLUE"
"M9200/935/930 MAG TUBE"
So what I could derive from this vague invoice was that they put a new magazine tube and new follower on the gun, which I don't think they actually did. I believe they just threw all the notes I made in the trash.
The only thing I noted that they did was take some steel wool to the bolt and scratch off some spray paint camouflage that I got on it.
This is what I asked they do:
I asked them to fix the safety screw that had a sheared off bolt head (before I bought it). They did not install one and the safety box inside the gun is still very unsafe and literally wobbles around. I tried to order this screw first, but they would not ship this item as it "could only be installed by the factory" (because I am not intelligent enough to screw in a screw)
When shooting 3" and 3 1/2" shells the lifter would "lift the shell so high that it jammed itself above the shell stop and I would have to hit the charging handle forward to load then next round (eliminating the point of a semi-auto). They didn't fix that, so I took it into my own hands and sanded and polished the shell lifter to eliminate that problem. I fixed it mostly.
Loading the tube is always a pain as the trigger pack assembly has such loose tolerances that the whole trigger assembly wobbles side-to-side enough to make a load 2 or load 4 method almost impossible as the shell lifter won't go all the way to the top unless I nudge it to the side. This would happen almost every reload I tried, which was disappointing when more birds are flying and I am trying to quickly load more shells.
That was the end of that letter. None of those very real and hazardous problems were addressed.
but soon after I installed a Nordic Components extended magazine tube bringing the capacity to 10 in the tube. This didn't work at all. I trimmed the mag spring per the instructions and could then fit 10 shells. When I pulled the charging handle back to load a shell it would not eject a shell into the lifter. I then sanded and polished the shell stop for a second time on the shell stop lip. Then when I pulled the charging handle back three shells would eject into the lifter creating a shell to shell jam rendering the gun useless until it was disassembled. After several calls to Mossberg and asking on this forum from very experienced 3 gun competitors, I concluded to get a Wolff Spring and a new shell stop from Mossberg (another $60). Installed both and nothing different.
I purchased all the Or3gun parts and nothing changed. ($250 that I cannot return now)
So, I have done absolutely everything in my power to try to make this shotgun work and it will not. I will never buy another Mossberg firearm again as I they do not take pride in their work and do not produce serious products, from my experience. I understand all of your points and that your past experience of owning Mossbergs are very good, but I will not own a weapon that has failed me again and again. I am going to return it to stock and try to give it away to someone for parts and cut my losses.
My ultimate suggestion to ra6317 is to not even consider this company as an option to invest in as there are far better companies with far better offerings.