Mossberg 930 Info
- Thread starter Dsiwy
- Start date
TRIGGER DISASSEMBLY
DISCLAIMER:
I am not a gunsmith, you assume full responsibility for the safe functioning and use of your firearm. I decided to post this at another members request.
CREDIT & TOOLS:
A buddy I shoot IPSC with told me about this. The trigger assembly for the Mossberg is very easy to get familiar with and reassemble. This project is about 15 mins long and only requires a basic knowledge of firearms.
You will need: a punch, a non-marring hammer, sidecutters, a micro screwdriver.
START:
Remove the two retaining pins with a punch and non-marring hammer.
The trigger assembly falls out. At this point, be careful tipping it on one side or the other. Some pins fall out very easily.
If the hammer is cocked, place your hand over it providing resistance and pull the trigger. If the hammer spring assembly falls out at this point, that is fine, set them aside.
Gently remove the main pivot pin retaining the lifter. The lifter and attached parts will easily slide off. Keep these together.
If the hammer spring assembly did not fall out, here it is. Tilt the trigger assembly forward and down to get it to fall out. Technically, this isn't required, but these parts are almost guaranteed to fall out anyways.
Using a jewelers flat screwdriver, carefully pry off the retaining ring and remove the pin form the trigger spring assembly. The retaining washer is a thin C shaped washer (bottom left of first picture) that needs to be stretched a bit to be removed. Do not pull it over the head of the pin.
At this point, the trigger spring and one piece of the trigger assembly should freely fall out.
Remove one coil from the trigger spring using sidecutters.
Carefully reposition the trigger spring and sear into the trigger assembly. Replace the pin and retaining ring.
Replace the hammer spring assembly into its hole. I would not cut the hammer spring as it can cause light strikes, therefore reducing reliability.
Replace the hammer and pivot pin
OPTIONAL
At this point, before reattaching the lifter, you may wish to sand down the edges on the lifter. Mossberg designs their lifters in such a way that they cause maximum cutting damage to the thumb. This part isn’t rocket science, use a fine sand paper and fine jewelers file to remove the sharp edges. You can see below that I also removed the sharp edges from the receiver and trimmed back some of the fore end.
At this point, reattach the lifter assembly to the trigger assembly.
Insert the trigger assembly back into the receiver and use a non-marring hammer to replace the retaining pins. Function test the trigger.
Result should be a clean 2.5-3.0# trigger pull.
DISCLAIMER:
I am not a gunsmith, you assume full responsibility for the safe functioning and use of your firearm. I decided to post this at another members request.
CREDIT & TOOLS:
A buddy I shoot IPSC with told me about this. The trigger assembly for the Mossberg is very easy to get familiar with and reassemble. This project is about 15 mins long and only requires a basic knowledge of firearms.
You will need: a punch, a non-marring hammer, sidecutters, a micro screwdriver.
START:
Remove the two retaining pins with a punch and non-marring hammer.
The trigger assembly falls out. At this point, be careful tipping it on one side or the other. Some pins fall out very easily.
If the hammer is cocked, place your hand over it providing resistance and pull the trigger. If the hammer spring assembly falls out at this point, that is fine, set them aside.
Gently remove the main pivot pin retaining the lifter. The lifter and attached parts will easily slide off. Keep these together.
If the hammer spring assembly did not fall out, here it is. Tilt the trigger assembly forward and down to get it to fall out. Technically, this isn't required, but these parts are almost guaranteed to fall out anyways.
Using a jewelers flat screwdriver, carefully pry off the retaining ring and remove the pin form the trigger spring assembly. The retaining washer is a thin C shaped washer (bottom left of first picture) that needs to be stretched a bit to be removed. Do not pull it over the head of the pin.
At this point, the trigger spring and one piece of the trigger assembly should freely fall out.
Remove one coil from the trigger spring using sidecutters.
Carefully reposition the trigger spring and sear into the trigger assembly. Replace the pin and retaining ring.
Replace the hammer spring assembly into its hole. I would not cut the hammer spring as it can cause light strikes, therefore reducing reliability.
Replace the hammer and pivot pin
OPTIONAL
At this point, before reattaching the lifter, you may wish to sand down the edges on the lifter. Mossberg designs their lifters in such a way that they cause maximum cutting damage to the thumb. This part isn’t rocket science, use a fine sand paper and fine jewelers file to remove the sharp edges. You can see below that I also removed the sharp edges from the receiver and trimmed back some of the fore end.
At this point, reattach the lifter assembly to the trigger assembly.
Insert the trigger assembly back into the receiver and use a non-marring hammer to replace the retaining pins. Function test the trigger.
Result should be a clean 2.5-3.0# trigger pull.
Last edited by a moderator:
Some people may have cycling issues in their brand new 930's.
For about 95% of these cases, run full power loads through them to "break in the action" My 930 SPX would not cycle Wallymart ammo until I ran three boxes of full power magnum slugs (you may need more, just to be sure. Some have run 20-30 before getting to this point)
Some of the earlier runs of 930 SPX's had the front sight alignment issues (the front sight was off a few degrees and would not warranty them) If you come across one and cannot resist the urge to purchase it, flip the shotgun upside down and lie it on a known/measured flat surface. The "wings" of the rear ghost ring sight should rest square on the surface *and* so should the "wings" on the front sight. If the front sight is off, it will wobble alittle or alot.
If there is wobble present, walk away. No amount of bubba-ing will fix this unless you get someone to re-solder the front sight in the proper position.
For about 95% of these cases, run full power loads through them to "break in the action" My 930 SPX would not cycle Wallymart ammo until I ran three boxes of full power magnum slugs (you may need more, just to be sure. Some have run 20-30 before getting to this point)
Some of the earlier runs of 930 SPX's had the front sight alignment issues (the front sight was off a few degrees and would not warranty them) If you come across one and cannot resist the urge to purchase it, flip the shotgun upside down and lie it on a known/measured flat surface. The "wings" of the rear ghost ring sight should rest square on the surface *and* so should the "wings" on the front sight. If the front sight is off, it will wobble alittle or alot.
If there is wobble present, walk away. No amount of bubba-ing will fix this unless you get someone to re-solder the front sight in the proper position.
All you do is take of the mag tube nut, pull off the handguard, remove old barrel, take the gas piston from the old barrel to the new barrel, then replace with the new barrel, put your handguard back on, then tighten the nut up.
If your 930 has an issue with rounds not feeding into receiver from the tube, this may help:
http://www.brownells.com/.aspx/lid=15831/GunTechdetail/Fixing-A-Mossberg-930-Feed-From-The-Tube-Problem
Upgraded parts, and they ship to Canada. Click on "international"
http:// www.or3gun.com/OR3GUN/about_or3gun_combo.htm
http://www.brownells.com/.aspx/lid=15831/GunTechdetail/Fixing-A-Mossberg-930-Feed-From-The-Tube-Problem
Upgraded parts, and they ship to Canada. Click on "international"
http:// www.or3gun.com/OR3GUN/about_or3gun_combo.htm
Last edited:
If your 930 has an issue with rounds not feeding into receiver from the tube, this may help:
http://www.brownells.com/.aspx/lid=15831/GunTechdetail/Fixing-A-Mossberg-930-Feed-From-The-Tube-Problem
Upgraded parts, and they ship to Canada. Click on "international"
http:// www.or3gun.com/OR3GUN/about_or3gun_combo.htm
Did you get it running???
No, this year's model only comes in Camo and is called the pro series. The exact same gun as privious generations, just with a bigger price tag. I bought 2 with the synthetic stock when Canadian Tire was clearing out their old inventory, just as backup guns for hunting and compitition. My friend who owns a local gun store showed me the new dealer's cost which was incentive enough for me to buy a couple. I really only need one back up semi shotgun so if anyone is looking for an un fired brand new in box 930 waterfowl, PM me and I'll pass on last year's pricing to help a CGNer save a bit of cash.
1963beretta
CGN Ultra frequent flyer
- Location
- Vaughan, Ontario
Anyone know where I can purchase a pistol grip stock for the 930? In the past I purchased a Choate mark 5 stock which I really like, but the dealer that I bought it from no longer sells them. Any suggestions?
1963beretta
CGN Ultra frequent flyer
- Location
- Vaughan, Ontario
The Mesa urbino is a nice stock as well. Is there a Canadian that you can recommend?
