Mossberg 500 Disassembly

Discussion in 'Mossberg 500 Pump Action' started by DHonovich, Jul 21, 2010.

  1. SHOOTER13

    SHOOTER13 ON DUTY Staff Member Global Moderator Forum Moderator

    Messages:
    8,731
    Re: Disassembly and reassembly of a mossberg 500.

    Wow...first time seeing this detailed writeup...well done !!

    Thanks for posting...
  2. nasa

    nasa .223

    Messages:
    402
    Re: Disassembly and reassembly of a mossberg 500.

    One of my buddies said you can stomp on a Mossberg in the mud and never have it fail on you. He's the brother to the one I traded for the 835 that was in such poor condition. Maybe that was what happened to it to get all the scratches and busted trigger assembly. :D
  3. Sn3aKyGuY

    Sn3aKyGuY .308

    Messages:
    1,166
    Re: Disassembly and reassembly of a mossberg 500.

    One thing I didn't see you mention (or missed) is what tools are required. Any special ones, or is it a 'grab what you got and call it good' type of deal? I don't have any punches laying around, so what would you recommend in that department? I never really payed attention if my local gs sells small tool kits. I'll have to check that out, because I'm the kinda person that likes to have the right tools for the job.
  4. LTB45

    LTB45 .308 Supporter

    Messages:
    1,586
    Re: Disassembly and reassembly of a mossberg 500.

    A small screw driver can be used as a punch. There is really no need to buy any special tools to breakdown a 500. Save your money for AMMO :D
  5. Bobster

    Bobster .308 Supporter

    Messages:
    1,383
    Re: Disassembly and reassembly of a mossberg 500.

    When I looked at the first pic, it looked like non-skid on the side of the receiver and I was thinking to myself "does he use it as a tree stand or something?" :? :p then I realized it was Vel-Cro (I think), probably to attach a shell holder... :idea:

    Thanks for posting the takedown, 911--I'll be sure to refer to it in the future!
  6. Mudinyeri

    Mudinyeri Sponsor Sponsor

    Messages:
    792
    Re: Disassembly and reassembly of a mossberg 500.

    Nice detailed pics. Thanks for posting.
  7. 911JB

    911JB .410

    Messages:
    75
    Re: Disassembly and reassembly of a mossberg 500.

    Sorry about the delay in answering everyone's questions/comments. A death in the family has kept me away for an extended period of time. I will once again try and check in more often.
    JB

    larryh1108 . Try pushing the action rods towards the top of the gun. Sometimes the grove catches the receiver and stops the movement.

    Thanks SHOOTER13.

    nasa, while they are very durable , they will fail if abused. The mossberg's durability reminds me of the AK47's durability. They are very tuff to stop. Every time I see one fail, I tear them apart and find them full of sticks, corn stalks, weeds, etc.

    Sn3aKyGuy, The only tools needed are a punch and a hammer. If you do not have a punch I would sugest grinding the point of a 16 penny nail off and using that as a punch.

    Bobster, you are correct. That is velcro and it is used to attach the shell holder.

    Mudinyeri, thank you.
  8. Sn3aKyGuY

    Sn3aKyGuY .308

    Messages:
    1,166
    Re: Disassembly and reassembly of a mossberg 500.

    Finally used this post today, and I have to tell you the pictures make it 100x easier than following the instruction manual if you've never tore down a shotgun before. The only difference in your procedure and the manual is the manual says to install the elevator first then install the bolt. I tried it both ways and it works just as well in either configuration. Thanks again!
  9. 911JB

    911JB .410

    Messages:
    75
    Re: Disassembly and reassembly of a mossberg 500.


    You're welcome Sn3. I don't think I ever red the procedure from the manual, :lol: . Glad the thread helped.
  10. Bobster

    Bobster .308 Supporter

    Messages:
    1,383
    Re: Disassembly and reassembly of a mossberg 500.

    I have a pdf from the Army on detailed 500 and 590 takedown. Found it on the web. You can pay for it from a number of sources OR do a search for "13levelm500.pdf" and find it for free like I did. 2.4MB and 180 pages of wonderful documentation to supplement the pictures provided here. :D
  11. atps1234

    atps1234 Copper BB

    Messages:
    9
    Hi folks, just performed my first breakdown, cleaning and re-assembly. As I was removing the trigger group, my finger *just* brushed against the trigger. I wasn't sure if I released the trigger but didn't know how to check. Does the trigger assembly look different from the pics when the trigger is pulled (or if you happened to have it released before starting)? Luckily, I guess I didn't pull the trigger because everything went back together fine and checkout went without issue. But it made me thing, how WOULD I know if I had pulled the trigger, and what could I do about it (re-cock?).

    Thanks all,
    OB
  12. atps1234

    atps1234 Copper BB

    Messages:
    9
    Thanks to this awesome forum, I found the answer to my question above in a post titled "Mossberg 500 Armorer's Course" - search for that string here or you can find it at:

    http://www.youtube.com/watch?v=PGYR103iBnQ

    Great stuff!
    OB
  13. LTB45

    LTB45 .308 Supporter

    Messages:
    1,586
    If you pill the trigger, than the Hammer will be in the up position.
    To reset it, just push it back down.

    Not sure if the 500 trigger is like my 1100 trigger but on the 1100, releasing the hammer while not in the gun can BREAK parts (Dont ask me how I know this :oops: ). So be careful.
  14. rbuck369

    rbuck369 Copper BB

    Messages:
    1
    in refrence to the forearm. i am unable to remove the forearm from my 500at. i attempted to push the action rods everywhich way and no luck. Am i doing something wrong or does this model not allow the forearm to be removed?
  15. old mossy

    old mossy Global Moderator Staff Member Global Moderator Forum Moderator

    Messages:
    12,297
    [Click Here To See Image Full Size ]

    LTB45

    User avatar
    20g
    Posts: 632
    Joined: Thu Feb 24, 2011 11:26 am
    Location: Connecticut
    Reputation point: 12
    Give good reputation point to LTB45Give bad reputation point to LTB45

    PostPosted: Sun Dec 23, 2012 12:47 pm
    The forearm NEVER slides out freely on any of my 4 500's.
    The action bars have a spring steel tension bar on them at the tube end, that means, with the gun upside down, you need to push on them to get them out of the receiver.
    Vice President
    Connecticut Citizens
    Defense League, Inc.
    www.ccdl.us
    Top
    QuoteReport this post

    BigJohn


    .22 LR
    Posts: 10
    Joined: Tue Dec 11, 2012 7:18 pm
    Reputation point: 0
    Give good reputation point to BigJohnGive bad reputation point to BigJohn

    PostPosted: Sun Dec 23, 2012 1:05 pm
    Got it off. On older 500s the magazine tube must removed, and the forearm assembly comes off with it. This old gun has some very unique features, compared to newer guns. I will take some pictures later. I think it is an educational gun to see.


    maybe this will help you.
  16. bpwhelan

    bpwhelan .22LR

    Messages:
    22
    Old post but I'll never forget this video.
    One of the first nights after purchasing my Mossberg I had heard to take it apart and clean factory "crap" out. Mind you this was my first shotgun (and any gun for that matter) and I remember fiddling with this thing for hours, having so much trouble fitting the cartridge stops back in, I think thats what they're called. Evantually I gave up for the night and remember thinking I hope this isn't the night I should need to use it... living in North Philadelphia isnt all fun and games.
    But anyway, the next day I woke up and found this video and it was truly a life saver.
  17. DHonovich

    DHonovich Founder Staff Member Administrator Sponsor "Philanthropist"

    Messages:
    6,917
    I am glad the video was able to help get your Mossberg 500 back together.
  18. AloBoy

    AloBoy .410

    Messages:
    32
    Thank you for this info.I just purchased a 500 in .410 and the manual kind of confused me.This is my first shotgun (I have other firearms) and wasn't sure about tear down and reassembly.
    Thanks again for some great info.
  19. Itsricmo

    Itsricmo Norfolk Southern RCO

    Messages:
    4,109

    Don't worry.. I couldn't get my 500 back together by following the manual lol..
  20. Hooperman42

    Hooperman42 Copper BB

    Messages:
    8
    Yep I do that cleaning allot. I have had my Mossberg Persuader 20 Guage for about a year now and love it. It is the 50145 with the stand off breacher (I know I dont need it and it makes the barrel and inch and a half longer but I like it. And it would do some damage to ones parts as it is sharp. But then I didnt really need a heat shield or side saddle either. Really liking it and happy with the 20G so my wife can use it if needed heaven forbid. I do that cleaning about every other time I come back from the range. I know its over kill. In fact I have not been to the range in about two months (I gotta go!) and so I did it the other day just to lube it up again. I have it down to about a 15 min job and once you do it over and over you can do it in your sleep. Very easy. Other than ammo availability I am more than happy with the 20G for now. I am not a hunter so for HD and range time and just fun the 20G meets my needs plus with # 2 Buck its still gunna sting a bit I bet.

    http://www.mossberg.com/product/shotgun ... shot/50145

Share This Page