AR15.Com Archives
 Mossberg 930 SPX Mag Tube Spring
BANDITOZ71  [Member]
10/27/2010 6:14:12 AM EST
Is there any aftermarket spring that is stiffer?
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strat81  [Team Member]
10/27/2010 6:26:15 AM EST
I don't know if it's stiffer than a 930SPX spring, but the springs from Nordic Components are stiffer than OEM 870 and SX2 mag springs.
m24shooter  [Team Member]
10/27/2010 8:15:53 AM EST
Just about any spring is going to be stiffer than an OEM mag tube spring on any Mossberg.
I use the Nordic and before that a Wolff.
BIG_PAPA  [Team Member]
10/27/2010 8:17:01 AM EST
Originally Posted By BANDITOZ71:
Is there any aftermarket spring that is stiffer?


Call mossberg. They have a replacement spring that is a little longer and stiffer. They provided it to me at no charge.
EightySecond  [Team Member]
12/13/2010 12:04:31 PM EST

Originally Posted By BIG_PAPA:
Originally Posted By BANDITOZ71:
Is there any aftermarket spring that is stiffer?


Call mossberg. They have a replacement spring that is a little longer and stiffer. They provided it to me at no charge.

You either got a CS guy that wasn't a total douche or know of some secret handshake.

I just sat on hold for 40 mins, someone picked up for a few secs and then hung up on me. Then I called back and sat on hold for 30 mins again only to wait for the guy to tell me that I needed to ship the whole gun to them so they could look at it.



I asked about the stiffer spring and he said there is only one. My issue is with the spring getting hung up in the extension tube when I have 7 rounds in the tube, as in I can screw off the extension and see the follower jammed in there and have to pluck it out somehow.

There are no apparent burrs or anything in the tube that I can see. I suggested that they send me a new spring and new extension tube and got a "sir, we don't troubleshoot over the phone". Shotgun is less than 3 weeks old - I am hoping this is just the break-in blues.

At this point there is no way I am shipping the whole thing to them (even if the labor is covered). Any suggestions on components to replace to solve the issue and make the gun more reliable? Thanks!
m24shooter  [Team Member]
12/13/2010 4:26:41 PM EST
From least to most expensive fixes-
Chamfer the edges of your extension and mag tube, just slightly.
Components, I would go with an aftermarket follower and spring to start. For followers you could go with pretty much anything from the Wilson/SGT type to the Vang SS unit, whatever you prefer. For the spring I would go with a Wolff 40" spring, and trim it back.
If those don't clear it up, then the next step up for DIY would be a new extension. If the follower is hanging up in your extension that would leave me to believe that that is really where your problem would be.
Choate seems to be a large part of the recent problems with Mossberg QC.
EightySecond  [Team Member]
12/14/2010 11:57:02 AM EST

Originally Posted By m24shooter:
From least to most expensive fixes-
Chamfer the edges of your extension and mag tube, just slightly.
Components, I would go with an aftermarket follower and spring to start. For followers you could go with pretty much anything from the Wilson/SGT type to the Vang SS unit, whatever you prefer. For the spring I would go with a Wolff 40" spring, and trim it back.
If those don't clear it up, then the next step up for DIY would be a new extension. If the follower is hanging up in your extension that would leave me to believe that that is really where your problem would be.
Choate seems to be a large part of the recent problems with Mossberg QC.


Ok thanks. What's the proper trim length on the Wolff 40" for the 930 in a 7+1 config with factory Choate tube? I guess I'll buy a few springs in case I need to swap the tube as well.
m24shooter  [Team Member]
12/14/2010 3:56:45 PM EST
IIRC it is like 25-28" in length. I'll check and make sure.
EightySecond  [Team Member]
12/15/2010 9:57:07 AM EST
Appreciate it.
m24shooter  [Team Member]
12/15/2010 5:04:19 PM EST
I use a follower with a tail, and with a 24" spring I can almost get 7 rounds in the mag tube. With a cup follower I can get the full 7.
I'm using a Nordic extension and extended mag tube cap.
EightySecond  [Team Member]
12/16/2010 3:13:11 PM EST
Thanks, m24, I'm anxious to see if those fixes get it running 100%. I love it, I just want it to work.
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