Mossberg 702 Trigger Tips


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hadmanysons
April 13, 2010, 09:49 AM
I plan to take apart my Mossberg 702's trigger and do a trigger job on it but I have yet to find any solid, good walk through on this trigger. I have read every post, every "How-to" (which is usually 5 incredibly vague lines) and been to every forum.

TRUST ME, I have exhausted all that google has to offer. I was just wondering if anyone out there has successfully completed this task and could provide me with a personal walk through on the dissassembly/reasessmbly and any tips they could offer.

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hadmanysons
April 13, 2010, 02:26 PM
Nobody?

hadmanysons
April 13, 2010, 03:16 PM
Ok, no cream. It's apart now, wish me luck

Owen
April 13, 2010, 03:27 PM
I just put one back together for someone that took it apart. My suggestion is don't take it apart.

The lower receiver , if you will, is Zamak, and the pins are the kind with the fins that displace material when they are put in. This means you only get to insert the pins (you'll need a hammer) a few times before the holes are wallowed out.

The way the disconnector works is tricky, and its a method I haven't seen before.

There is a steel channel that holds the trigger and the trigger spring. The channel has two pin holes going though its sides, and two rectangular cutouts in the bottom. In the gun, the bottom of the channel faces up (does this make sense?) One of these cutouts is the sear, and the trigger passes through the other. The trigger has two holes. The pin that holds the lower rec., channel and trigger together goes through the lower hole in the trigger.

The upper hole in the trigger is used used to retain a letter A shaped piece. This piece acts as both the disconnector, and the means to push the channel down, to release the hammer. The thicker part of the disconnector goes to the front of the gun. The disconnector rotates fore and aft relative to the trigger.

There is another pin hole between the sear and the trigger pivot hole. This hole is the pin that holds the trigger spring. As far as I could tell, both legs of this torsion spring point to the rear of the receiver. This spring is used to load the sear, and to reset the disconnector.

When the trigger is pulled, the disconnecotr pushes down on the channel, pushing the sear away from the hammer. the hammer falls, the gun fires, and the bolt comes back, driving the hammer down. The hammer strikes the disconnector, pivoting it, so that it passes through the trigger cutout in the channel. This allows the channel to pivot up and catch the hammer hook. When the trigger is released, that "A" pops back though the hole and resets the trigger.

Your best bet to improve the trigger is to weld up the hammer hook to decrease the sear engagement, which must be almost 3/8". However, if you really want a semi-auto .22 with a nice trigger, I'd look into buying a different gun. I highly recommend not disassembling this gun. Please do not disregard my advice. I work on guns for a living. The major pins displace material in the receiver. The minor pins are so loose, that I had to use grease to hold them in place while ressembling the gun. I had to make a tool to hold the parts in place, to push against the springs, to get the major pins in place, and even then it still resembled a monkey fornicating with a football.

hadmanysons
April 13, 2010, 04:58 PM
I appreciate the heads up and all the information. It was certainly not to little but it was to late. The damage is done and i am halfway through polishing it all now. Probably be closer to friday when i make an attempt to put it all back together. I wouldn't have taken it apart if i had read your post before. Oh well. I know who to ask when i have problems.

I did take everything apart very slowely and took pictures as i did it, so i could get it back together as easily as possibly. I had heard about how horrible they can be so i was cautious.

Thanks again

Owen
April 13, 2010, 05:20 PM
sorry it wasn't more timely.

hadmanysons
April 13, 2010, 05:22 PM
sorry it wasn't more timely.
Not your fault, thanks though

hadmanysons
April 15, 2010, 12:07 AM
Holy crap. You weren't kidding! Got any tips on helping me get this sucker back together?

Does this look right? I think the spring goes the other has to rotate back a little right?

http://i262.photobucket.com/albums/ii115/Hadmanysons/d327fba0.jpg

Owen
April 15, 2010, 06:41 PM
the hooked end of the spring presses up on the disconnector, and I'm pretty sure both legs of the spring point to the rear of the gun. IOW, with the spring uncompressed, it needs to rotate about 90 degrees clockwise in the photo.

hadmanysons
April 16, 2010, 01:33 AM
Right. That's what i've been doing, it's just the position of the spring in the photo. Ok. At least I've got the right idea, just a big PITA to get it going. I make a little progress everyday.

BTW, you were right. THIS WAS NOT WORTH IT! Hindsight is 20/20 :banghead:

hadmanysons
April 16, 2010, 04:02 PM
Finally got it all back together and it functions just fine. It is a lot smoother now but i'm not sure if it was worth all the headaches. Thanks for all your help Owen.

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