How Pump Action Firearms Work: Mossberg 500

[@TheMouseGunner]

If you are wondering what program I use for the creation of this video, please check the description. It should be included on every video in this series, if not let me know.

[@zevarlo997]

Sorry to be so off topic but does someone know of a tool to log back into an instagram account?? I was dumb lost the password. I appreciate any help you can offer me!

[@romantrenton3644]

@Zev Arlo instablaster :)

[@Phill_100]

Does the maverick 88 operate the same as the mossberg 500

[@kds471]

The bolt is simplified a bit, after taking mine apart half a dozen times I finally figured out the bolt workings. The bolt itself doesn’t pivot, a piece inside does. This animation has helped tremendously to figure out how the shotgun functions and what may cause certain malfunctions. Thank you!

[@mbt841]

After learning to disassemble, clean, and reassemble my shotgun, I wanted to know what the different pieces actually do, especially the shell stop arms, which can be a bit tricky to put back into place. This video made it perfectly clear, and I now have a much better idea how the whole mechanism actually works.

[@jimpemberton2712]

Thanks a bunch for the info! I was having trouble with the locking bar not unlocking after pulling the trigger, forcing me to hit the button to unlock it after every shot. After watching the video, I disassembled and inspected the gun and found that the pin that goes thru the sear and activates the spring when the sear moves, had worked out of the bore. So, after moving the tip of the spring out of the way and reseating the roll-pin everything works as it should. A simple enough fix, but one I never would have figured out without the video. Thanks again!

[@billsortore2637]

I had a similar problem to yours, but what I found was the problem is with the hammer. The lower roll pin in the hammer that applies pressure to the action locking bar spring after you pull the trigger had fallen out at some point. The missing pin released the spring pressure on the assembly causing the action lock lever to stay in the locked position after pulling down on the trigger.

[@youngtiger1]

Thank you for making this graphic video. I am a new shotgun owner and this helps me to understand better how the pump action shotgun works. As a visual creature this is perfect. 🙂

[@mikeburns262]

This video is incredible, I cannot overstate how much this style of teaching and technology needs to be utilized more.

[@johnholcomn8560]

Good video. Having owned a 500A since 1985, who knew such a simple design is as complex as it is. I have even more respect for this venerable design.

[@jshepard152]

Gun designers are definitely smarter than you and I. At least the original ones.

[@dahuskey81]

Mr. MouseGunner, HOLY CRAP GREAT EXPLANASTION!!! I love how you took the time to actually make all of those components and then add them to an actual animation. Sorry it took so long to actually view this video. I am going to keep watching!

[@wilsonleong569]

This is great. I am having issues with the shells not coming out of the magazine tube on occassion, and I was having a difficult time figuring out what actuates the responsible part, and this 3d simulation made it crystal clear! Thanks for this fantastic work.

[@danurc2450]

Poop

[@johnqpublic2718]

Shell Interceptor or shell stop?

[@uintabri3798]

I love how each firearm company has evolved their own unique versions of widely used style if gun.

[@jonathanpino6445]

This is a fantastic technical teaching tool/video. Thank you very much for making this video.

[@christinamoneyhan5688]

Thank you so much for taking the time to explain how these actions work. The animated video of it in action is outstanding too. Awesome !👍👍👍🇺🇸🙏🏽😎

[@juancortez4726]

Thank you, thank you!! I think I may now know why my Mossberg 500 in .410 is double feeding... Mossberg sent me a set of replacement shell stoppers once before but the problem did not go away completely; got slightly better but did not go away... gonna try something I learned from your video! Thanks again!

[@yelectric1893]

Thank you, I was so curious about the shell stopper mechanism.

[@Fudmottin]

I did indeed enjoy this most informative video. I have a 500A made in May of 1970. It has some differences, most notably the single action bar only. It has been neglected in a closet for some time and I recently took it out to recondition it and put it back into service. I'm no mechanical engineer, but I do admire the parsimony of the design and its elegance. I do hope the single bar system is strong enough for my use because the receiver and bolt slide are not cut for a second bar. There are also other minor differences.

[@thomascowan9643]

Awesome video, I just dissembled and reassembled my 500, and now I know how all the parts interact. Great video.

[@colbyturbeville2946]

With your 500 do you ever have problems with the edge of the shell not going into the chamber like getting caught up how can I fix this

[@sinisterministerandthevici1775]

Very informative! I'm also wondering about the particulars of the safety.

[@PZizzle]

Thanks for the excellent vib!

[@chipngo9758]

What happened to the modern engineering? This system is more than 100 y. o. Yet, it still works awesome. Props to John Moses Browning. God bless his soul.

[@pfow2006]

definatly a detailed explanation, but I know every detail intimately, thanks for the vid/ education.

[@RAZ0RGAM1NG]

Dude...ive been trying to get my return spring reinstalled thinking i put it back in wrong, because FOR SOME REASON im the only person with a maverick 88 that has a COMPLETLY differently designed return spring lol but this vid helped a lot, gonna try again right now haha

[@goianiz1967]

Can you please make a short version where it just runs the action a 100 times, taking 2 seconds each time, showing the entire gun, and just playing music in the background? This way I can watch it before this video and then understand it better.

[@gastonbarouille767]

You are GREATTTT. Excellent explanation as well the 3d model. Far far far the best I ever seen. You win another suscriptor ;) Maybe you could use different colors on the blocks to give better contrast and will be easy to understand. Thank you a lot for share your work and knowledge

[@MetalMan2k]

World of Guns is such an accurate game / Gun Schematic! Nice video @MouseGunner, you have such perfect control of cameras. Also, thanks for explaining why my Mossberg 500c only has one Action slide.

[@DaveTex2375]

The pivoting shell stop on the older models acts on the shell lifter making contact on a lip rather than the back edge of the slide pivoting the assembly. The parts are interchangeable if the old style wears out and I suspect this design change is because Mossberg avoiding infringement of patent similarities to the Hi Standard manufactured a few years before it. Much hunch is the old design was a work around to avoid patent infringement much like waiting for the Remington patent to expire before using dual action bars.

[@user-xu8uo7tz8n]

That was really good info...thanks

[@crosman177]

Tried watching a few times. What part do you mention the ejector? I’m having issues

[@doctorschulte9751]

This was very informative thank you.

[@jamesa6272]

Great video! Now what would cause a shell to flip around and get stuck when racking?

[@rangerdanger766]

excellent job narrating, I seem to be having troubles with my shell stop system feeding. seems fragile

[@myusername3689]

It’s basically manually operated tilting bolt.

[@christianmittelstet7755]

STG 500

[@ColoradoShooterInstruction]

A beautiful thing, excellent video!

[@joeyperez8581]

Outstanding, thanks

[@danielescobar7618]

What a great record

[@jackbrust4024]

The X-ray allowed a visualization of possible errors corrections of a jam caused by a hasty assembly. Thank you

[@wipperwil]

Good Lord, this is fabulous! Can you do one for the ubiquitous 10/22?

[@SmegHedd117]

Drop a mossberg 500 series and the part you DON'T mention, the Elevator, one of those two long parts that poke out the side of the reciever. When the weapon is dropped, SOMETIMES, those pins can pop out of place. IF that happens in a home defense situation.........

[@Retrad_]

how come the shell doesn't fall out the lifter? only the front is supported from the bottom does the rim on the shell sit on the little arms of the lifter? i never understood that

[@whitebuffalo4641]

This is really good. Thanks for all the work.

[@MCMXI1]

Outstanding. Thanks for the work.

[@paulruth83]

EXCELLENT!!!

[@joeltipton6038]

Would you happen to know what causes 500 to not release after a shot is made.

[@ah64dbeast37]

1:55 and that's the reason it was designed with 1 instead of 2 arms

[@PonzooonTheGreat]

I can't seem to find a video on the Ithaca M37 shotgun. How does it's extraction out the loading port work?

[@christianmittelstet7755]

Looked for the same thing.

[@jasnijimin6329]

I like to see your review.so please review benalli army shotguns

[@typedeaf]

I pulled out my 500e 410 from a decade+ of not being used. When loading/ejecting shells, the shells just seems to fall out the bottom of the gun before being loaded, or get jammed ..somehow. I found that if you only load 1 shell at a time, it is less likely to jam, but still tends to want to fall out if you aren't both fast with the action movement, and tilting the gun slightly to have the shell favor falling against the side, instead of out the bottom. At first, I thought that the gun was missing the loading ramp like on the 870 Remm, but then after looking at this video, I see that it handles shell loading completely differently than the 870. I am stumpped as to why shells seem to fall out while pumping the action. My only guess is that since the shell lifter engages so late in the action (like the last half inch), that the shell stops are clearing long before the shell lifter has a change to get under them. But why?? Any ideas?

[@sevenrats]

It sounds like the left stop is not grabbing enough of the edge of the shell and it is clearing the edge too early. I would take it out, put it in a vice and give it the slightest of bends in towards the curve. Then it will clear the shell later and the lifter will have time to drop down and catch the next shell. Worst case here is that if you mess it up or it doesn't work, just order a new stop from Mossberg. If the right stop were bad then the shell that would drop would be the NEXT shell not the one currently being loaded. www.brownells.com/schematics/mossberg-/500e-410-sid162.aspx Part#12

[@AmisCorolla]

Thank you for this video! :)

[@timmysummer7464]

So hypothetically if you ground down the top of the locking lug and replaced the handguard with some springs attached where the handguard was it would be semi automatic?

[@johnconners8346]

I would question whether sg shell pressure would have the energy to drive all that mass in relation to the spring weight you would need to drive it back to battery. You would eliminate the locking block since the spring is what would actually hold it. I guess if the forend wasn’t as big it may function.

[@collinosgood4935]

Hey MouseGunner, I was wondering if you could do a video on the boxlock action. I just recently purchased a 500 N.E. built on a stevens 311 12 gauge, and am curious as to how the action functions. Also Thank you for creating these videos, they have helped me tremendously to obtain my associates degree in firearms technology through sonoran desert institute.

[@aykutcelikdag4318]

Collin Osgood oto5

[@exidorcyanuro]

Man, that intro is so sweet. What's that song?

[@spalacios9058]

In this video, (10:35) you have the trigger and behind it is a spring. Right behind the spring, you have a thin small tube that sits flush, what is that called and what is it for? I was putting a black hawks knoxx breachersgrip on my shotgun and noticed that this little pin wasn’t 100% inside. Meaning, the right side of it wasn’t in the hole. It had fallen out so I grabbed a small screw driver and lifted it to like it up with the hole and with another screwdriver I pushed the other side in (it was hanging far to the left) and now it was flush with no over hang and in both holes. I last shot my shotgun about 5 months ago, no problem. Any ideas?

[@FocusplusPassion]

Can you made how ithaca 37 or browning BPS work ?

[@dantankunfiveancestorsfist]

what would cause stiff or difficult for the slide to slide back after a shell has been fired to be ejected and for the next shell to load in? Thanks

[@gregorymceaddy8884]

The original single action bar was made from milled steel not alloy...much stronger and smoother...

[@grumpypants8113]

thumbs up for echo & the bunnymen.

[@googlny]

Is there real design drawings with actual dimensions ????

[@RICKY760]

Very cool thanks

[@Shooting_Stuff]

What about the action release, why am I having to engage it every time I want to cycle a new shell????

[@chrisbard9373]

Help needed. I have an old Mossberg 500 AT. I cannot find any info on the weapon. I would like to know how old it is and another problem I have is on the mag tube. There are two brass soldered rings on the mag tube. Can they be ground off as it creates a problem for the forend removal.

[@chainiigrib]

great video!

[@TRIKushbeachside]

I have a 500 that I just got used and there seems to be something loose/sliding around. It sounds like a piece of gravel or a BB somewhere near the pump action and barrel. It makes the noise when I tilt the gun up and down. I was just wondering what it is and if it's safe to shoot. Thank you

[@carlenehead6964]

The noise your hearing is probably the plug in the magazine tube, a short piece of dowel rod or similar size shape material that limits your mag capacity. If the mag tube is loaded and the noise stops then there’s your answer. If this is the case, yes the firearm is fine and that’s normal. Hope this helps

[@jimlacefield7176]

Like the other guy said.....it's probably the waterfowl plug in the magazine tube

[@alfeovaldez8066]

thanks for the info.

[@kds471]

Man lots of moving parts. A feat of engineering for it to cycle reliably thousands of times.

[@blacklotus9522]

I want to see the inside of the receiver in 3D

[@jacksagrafsky4936]

Nice video with an x ray view of WHAT should be happening. I have a Mossberg 500 FLEX and the shotgun will not feed shells. The two tabs on the shell stop and interrupter will not allow the shells to feed onto the lifter. Have tried different makes of shells and it will not feed. Contacted Mossberg and they want the serial number the receipt and a video of the problem. True BS to me.

[@user-dm1jw1gy5q]

Do you have a video on the rock island m five

[@Parcha24]

will you explain a newer invention in this field ? if given a chance

[@5ghostshadow]

The action lock is confusing me and maybe I need to have a shotgun in my hands to see this. I see many videos of people racking the slide back and forth with not obstructions. Are they holding the action lock down while they continuously rack back and forth or am I missing something?

[@jonathanmcgowen3073]

Yes basically.

[@bobbybooshay8641]

Can't follow this guy to save my life.

[@workinmanworkinman3889]

The Remington 870 only had one. Mossberg had two, then Remington later added two....

[@yourmomma2995]

i dont thinks so, the first gun i ever got was a mossberg 500 20ga for my 9th or 10th birthday so it must have been around 1980 or 81 it only had 1 action bar.

[@morales6224]

So THAT'S how these things feed.

[@gregorymceaddy8884]

Never shuck your pump action to unload unspent shells

[@jacobstaten2366]

We need more 10 round tube fed guns in every caliber so that our brothers in California can top off if they can't reload 10 rounds quickly with their bullet buttons.

[@TonyB851]

I no longer feel like my Maverick 88 is a simple and reliable home defense weapon 😳 too many moving parts! I think I'll stick with my AR, or a pistol! 😂

[@rock3tcatU233]

You're confusing strength with ductility, the fact that aluminium is softer doesn't say anything about it's strength.

[@gastonbarouille767]

What software did you used and where can I get the files?

[@JapethSierra]

Gaston Barouille its called world of guns

[@chedarcheese1651]

Thats how i thought it would

[@sxleong]

Mossberg vs Remington vs Winchester, anyone?

[@jshepard152]

Mossy for the win.

[@scottjackson5430]

do you own a mossberg 500?

[@Truck_person]

probably not listen to his voice

[@srejonhossain7990]

13:40

[@pedrorivera1375]

For god sake, I just want to see the animation in a loop, the images by themselves will explain a lot. I don't want to hear the expalnation.

[@shoersa]

I think the rest of us appreciate the explanation very much. For god sake do NOT remove the explanations!!!!

[@presido56]

G

[@rajansingsing1086]

Hindi language

[@cyborg7779]

chatterbox

[@rx7tool]

You need real guns to show better examples and demonstrations

[@shoersa]

X-ray vision would be a problem with real guns and is ESSENTIAL to the purpose of this great video!

[@SalimMahmood-killuminati]

what software is used to create this if i may ask?

[@mainlymusicman]

i was lost from 4:30

[@ttp5510]

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