mwc5 Posted April 5, 2014 Share Posted April 5, 2014 I bought a Mossberg 930 JM for 3 gun about 45 days ago. It functioned 100% shooting about 100 rds as shipped by Mossberg. The ONLY mod is I sent the trigger group to C-Rums to have the lifter welded - Jeff did a good job and turned it around in only one week. Re-installed the trigger group, went to the range this morning to test and it does NOT fire. I have zero experience and knowledge of this gun so am at a loss of what to look for - the unfired shells have NO primer dent. It loads and feeds OK, the bolt goes all the way closed .................................... Some one smarter than me with any suggestions ??? THANKS in advance ! Link to comment Share on other sites More sharing options...
openclassterror Posted April 5, 2014 Share Posted April 5, 2014 Is the hammer falling? Audible "whack" when you pull the trigger? Link to comment Share on other sites More sharing options...
uncledoc Posted April 5, 2014 Share Posted April 5, 2014 Do a forum search....there some threads that may help you.......wishing you the best! Uncledoc Link to comment Share on other sites More sharing options...
BOOM Posted April 5, 2014 Share Posted April 5, 2014 Pull the trigger out; test and see if the hammer is failing freely ( with enough force), look at the hammer spring make sure the cap is on the hammer spring . If you took apart the bolt carrier and bolt to clean them take them apart again and check to see if the firing pin moving freely . If every thing looks fine and the gun was running before you sent it out for the lifter work call them first, and send it back the trigger group may be damaged, or just assemble wrong. Things happen Link to comment Share on other sites More sharing options...
mwc5 Posted April 5, 2014 Author Share Posted April 5, 2014 Yes, I can see the hammer fall through slot on RS behind bolt. I do have an email in to C-Rums asking if the trigger group was disassembled. Will search here & try to find threads relating to this prob. THANKS !!! Link to comment Share on other sites More sharing options...
BOOM Posted April 6, 2014 Share Posted April 6, 2014 Mwc5; Doing some reading through some old post here about trigger jobs.. A shotgun that was having light strikes issues do to a lighter trigger hammer spring he put the original factory spring back in and no more light strikes, problem solved. worth a try Link to comment Share on other sites More sharing options...
mwc5 Posted April 6, 2014 Author Share Posted April 6, 2014 Thanks again ! Link to comment Share on other sites More sharing options...
mpom Posted April 6, 2014 Share Posted April 6, 2014 mwc5, I would look at pictures of the 930 fire control group/trigger housing available on the net and compare to yours. My bet is that it was reassembled incorrectly. Fact that there is no firing pin mark on the primers when you attempt to fire, yet hammer drops, leads me to think its not a weak spring problem, but a mechanical problem, probably blocking the hammer from contacting firing pin. Something is where it does not belong. Might be worth the cost of a visit to a local gunsmith that is familiar with the 930, if that is an option. Where are you located? Link to comment Share on other sites More sharing options...
BitchinCamaro Posted April 6, 2014 Share Posted April 6, 2014 Maybe the plunger is missing from in front of the hammer spring? There are a few threads on here that have detailed disassembled trigger groups. I'll try to find a pic. Link to comment Share on other sites More sharing options...
OscarMike Posted April 7, 2014 Share Posted April 7, 2014 I was thinking the plunger too when I read his post Link to comment Share on other sites More sharing options...
mwc5 Posted April 7, 2014 Author Share Posted April 7, 2014 Maybe the plunger is missing from in front of the hammer spring? There are a few threads on here that have detailed disassembled trigger groups. I'll try to find a pic. That would be GREAT, I would appreciate it !!! Link to comment Share on other sites More sharing options...
mwc5 Posted April 7, 2014 Author Share Posted April 7, 2014 Just found this link - http://www.shotgunworld.com/bbs/viewtopic.php?f=58&t=219571 I'm going to disaasemble my 935 trigger group tomorrow and see if it's correct ........................... Link to comment Share on other sites More sharing options...
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