Mossberg 930 SPX ... help!
So I just received a brand new Mossberg 930 SPX and promptly read the instructions manual and then disassembled it so it could be cleaned and oiled. I then put it back together and followed a break in regiment consisting of racking it repeatedly. Once that was done I disassembled it for a second time to observe the wear points and to clean out these new shaving deposits.
The problems is that this second time I disassembled it I set the shotgun down and a small spring+pin+cap type part fell out. I didn't recognize it and I can't seem to find it anywhere in the user manual.
Does anybody know where this piece came from or where I can find information about it??
Thank you all very much.