Mossberg 500/590 Magpul Forend Installation: Keep your Heatshield!

The first step in this custom 500 build is to install a Magpul forend. Now, they no longer advertise this as being 500 compatible, but I'll show you how to tell if it'll work for your gun, and how you can keep your heatshield!

[@douglasscott9753]

You completely demystified the process. Best instructional I think I've ever seen. One thing I did differently was using a leather/silver workers rawhide mallet to peen over the heat shield. It was fast and really curled over the shield to hug the barrel. Weird I had a leather hammer but not a mousepad...

[@booliganshootingsports]

Hahaha, we all do our best work with what we have on hand!

[@DougCaldwell]

Thanks for close-ups of work and plain background with good lighting. Very good DIY video.

[@disrealnow9664]

Crimping the heat shield sucks - I would much rather file down / cut down the Magpul plastic than put elements of my shotgun into a vice - cmon now

[@booliganshootingsports]

And that’s a much more difficult and objectively worse solution. But you do you!

[@DANYELEEMAN]

I think the Anti-Rotation insert went in BACKWARDS! It says flat end towards the forend! Thanks for the heat shield tip!! Worked grea

[@sandymitchell8182]

wow thanks for the video, been wanting to do this but thought it was gonna be a lot more technical, I have the same shotgun and definitely wanna keep my heat shield

[@christopher7398]

Fuck this, I’m getting rid of this heat shield. Nothing but a pain In the ass

[@theoriginaldayne]

Thanks for the great video man. I am about to install the same forend on my 890 Shockwave (thinking about making a video, I'll try to remember to give you a shoutout if so).

[@MagnumPrimeM44]

cheers to you sir. Easy, straight forward and helped me install my new forend in a matter of minutes. My first shot will be to you Booligan!!

[@booliganshootingsports]

+Chris Thomas glad it came together easily for you!

[@ALovelyBunchOfDragonballz]

I have found what I believe to be a better way. It involves time and effort, and a little known practice of fitting parts. I (successfully) tested the proof of concept (poorly) with a black one, then found an FDE one online to match my SGA stock. For specificity I have a Mossberg 590, 20" Accu-choked Heavy Walled Barrel, w/bayo lug, Model #51663* -Take the Magpul pump, lay an MLok rail in the slots on the side. -Scribe a line on pump where the top of the rail meets it. Do that on both sides so that both sides have a scribed line a few mm from the top about half of the length of the pump. -Now flip the pump over and run it over 80 grip paper while applying even pressure. -When you get half a mm above that line, stop. -Flip it back over, clean it with progressively finer paper (200-400-600-1000) to get rid of the marks and round off the edges. -Now you have a fitted pump that can still accept MLok rails for stuffsnthings and fits with the heatshield that is still doing its job by being far enough away from the barrel to resist heat transfer. *That's the closest model to what I have. I have a heavy walled barrel and bayo-lug like a 590A1, but I also have a plastic trigger guard like a 590, BUT also an accu-choke brrl which is only listed on one 590 option and no a1 options. My model no longer appears on the website because I guess we can't have nice things. The perfect pump action offered up by a company with sub-par options.

[@medicalpatriot3174]

Is there any way you can show a video or pictures of how you did it step by step? Would help.

[@baker90338]

With the heat shield it looks like one of those trench shotguns with the regular pump grip

[@guerom1367]

Looks awesome with that magpul forend. I hate that corn on the cob handguard. I got a nice hogue one but couldn't install it cuz my maverick has the action slide tube attached to the forend

[@pravoslavn]

Thanks. I appreciate your attention to the graphics. Without graphics, these kinds of presentation just do not work. And taking photos of a nonm-reflective black surface is a tedious job. You did well. Thanks. I plan to make the same modification, but I shall take some time sanding down the inside surfaces of the Magpul fore-end, to gain a few extra thousandths of clearance.

[@kylegreene1356]

Just crimp it bro. Likely too late, this comment was a year ago, but the crimp works great. Vise crimp with a pad to stop marks and rubber mallet the rest evenly. Good luck.

[@RS8XB]

Such a great video. I have the Persuader. Will be buying this

[@Munky332]

So, does the magpul forend work with the shorter 6-5/8ths inch action tubes? I have the shorter one, no one seems to answer this question, I'd rather not have to spend an extra 60$ to get the longer one.

[@chrishelms1967]

I swear to God.... I had this exact problem about 3 hrs ago..... didn't look anything up, just switched the heat shield to another 500, and now this pops up in my feed ?!?!?! BIG BROTHER IS OUT THERE....🙄

[@bigdongled3077]

Crimping the heat shield the way you did just defeats its purpose

[@booliganshootingsports]

Craig Guerrero it still acts as a barrier between your hand and the hot barrel. Yes, it’ll reduce the effectiveness slightly since there’s less air space, but honestly, nobody is getting the barrel hot enough to cause issues on a pump action shotgun like this. It’s mainly cosmetic.

[@thelegendofmiles]

Will this fit a maverick 88?

[@altumpaul]

Maybe a heat gun and flare the top of the foregrip a little?

[@emstop3174]

Well done. All vids I have seen have you break down the entire action.

[@djturnz]

Unfortunately, my 500 has the forend that won't allow the Magpul .

[@hoysause]

Easy to follow, straight and to the point. Thanks man

[@justinmanny86]

was getting your retaining nut off on the first disassemble a complete bitch to unscrew? mine wont even unscrew

[@kctyphoon]

I just did this to my Mossberg 500 SPX. Mossberg says you cant put a heat shield on that model due to the tall sight on the barrel - but spreading the front of shield apart a little did the trick. Also - my heat shield isnt contoured like that one. It comes down much further around the sides. I left the heat shield on the barrel and covered the teeth on my vice with a cloth, and used the vice to crimp it down. Finished it off with a soft face hammer from Harbor Freight and the Magpul grip slides easily back and forth, just barely touching the shield when the gun is racked all the way back. The SPX model comes from the factory with a pistol grip, ported barrel, ghost ring rear and AR style front sight. Shotgun looks awesome now with FDE Magpul furniture and factory parkerized heat shield. Just added the QD cups in the stock, and a QD front magazine tube cap for a Magpul sling. 7 round Black Velcro mounted elastic side saddle from Esstac on the receiver. Waiting on an Mlok mounted front hand strap made for the Remington tac14 which uses the same Magpul grip, and the 400 lumen Inforce light also in FDE to finish it off. I like “this” shotgun better without the factory pistol grip and kinda flimsy AR style stock it came with. The Magpul stock is much better. I have a shockwave that i converted over to a pistol grip and arm brace anyway, so its nice having this SPX with a more traditional style stock setup. Don’t wanna sound arrogant, but i gotta say my SPX is pretty friggin sexy looking now. This vid inspired the transformation. Thanks

[@followerofchrist6694]

Saved my Christmas gift. Thanks man!

[@kendallang4854]

If you have the short slide tube, you can get an extended hogue castle nut to make it work.

[@two23rem]

That is what I was thinking.....good call

[@johnrakes4425]

Where can you get that? That is the problem I’m having

[@OUTDOEQUEEZY]

What size is your action slide?

[@connordebner7443]

Yeah wish he said. And got the measurements right.

[@nathanmatheaus2930]

Dang I ain't seen one of those bracelets since the early 90s. Great video

[@blairrad1785]

Why did you say, “…slides in like ‘thus.’” That is not correct.

[@truetalon]

Its funny how both Magpul's website and on the box say only for the 590/590A1. However, the instructions inside the box point out which of the two spacers to use for the 500 series. I fitted one recently to an ATP8 500 riot gun from the 1980s - and it fits and works perfectly.

[@booliganshootingsports]

The 500 series has a few lengths of action tubes, which this is only compatible with one. So it makes sense they avoid saying it’s compatible.

[@MarkBeemer]

Thanks for the info, I would've broken something otherwise lol.

[@jepolch]

Glad I saw this before I tore down the whole gun!

[@johncontreras2327]

Could that apply to the 870? And does it block the sights?

[@rawr7651]

So I'm trying to to get a tube slide for the mavrick 88 and I got the wrong size I got 63/4 now which one shud I get then anyboby help me? Or tell me where to find it cheap

[@victorfernandez5819]

rawr7651 7 3/4” or 7 5/8” no 6’s

[@agarcia77720]

I have very noticeable cosmetic issues on my mossberg flex 500 wonder if could just install something else I hate warranty processes

[@booliganshootingsports]

It's really easy to install new furniture on Mossberg models.

[@bartwardenn555]

You sound like ian from forgotten weapons

[@joeyburdine5045]

1991 called. it wants its friendship bracelet back.

[@booliganshootingsports]

+Joey Burdine 1991 called from its sweet neon phone.

[@dannylopez4575]

Thank you sire

[@billsalcido7878]

Isn’t the point of the heat shield not touching the barrel to help dissipate heat?

[@booliganshootingsports]

The heatshield already touches the barrel at multiple points.

[@mrohsofine757]

This makes my racking much harder. Trying to find out why. I've sanded my magpul foreend. Not rubbing anywhere. Works fine till I put barrel on???

[@jakepalmer1747]

Man ill have to give that a shot with my rem870, putting together a shopping cart for making a duck hunt a home defense and no foregrips seem tk accomodate a heatshield

[@morris4069]

Stipple the recessed area of the foregrip. You'll wonder why it doesn't come that way from the factory!! Man is it ever grippy and looks awesome!!

[@morris4069]

ANTI HERO Of course the magpul one. If you do the mossy fore grip let us know how it turns out. Might want to practice on it before you start on the magpul grip. I practiced on some BB gun parts first. The materials vary in composition so start in a spot that isn't seen till you get your heat/technique dialed in.

[@theoriginaldayne]

Can you imagine a fully stippled mossy corncob forend? That wouldn't just be grip....that may actually hurt lol

[@theorobinson2347]

The legs on my forend will not detach, i think i will have to purchase a slide action assembly to attach magpul forearm, u have a different model 500 than i do

[@tjnslayer7378]

i have the forend grip with the pin in it can i still use that grip

[@booliganshootingsports]

Nope, you need to replace the action tube with the appropriate one.

[@AWPtical800]

Huh. Wonder if this will work with the ACM Mossberg...

[@NuisancePanda]

Bought one of these for my 500A... everything else has swapped out easy-peasy. Not this though. Too long :(

[@booliganshootingsports]

Yeah, you really have to have the correct action tube in order to install it. Most 500s have the wrong action tube now unless it's a Tactical or Persuader model. That's why Magpul no longer sells this as the "Mossberg 500" model, only the 590 model.

[@NuisancePanda]

It's all good. I'll put it on my Shockwave. I know that's a 590 :)

[@booliganshootingsports]

You can’t put it on a factory Shockwave either without substantial mods to the fore end. I built this gun into a shockwave which allows me to keep it on, but it requires a ton of work for a factory one.

[@NuisancePanda]

JEEEE-SUS CHRIST!! Does the Magpul sticker work or do I need a different gun to put THAT on my window too?!? LOL!!!

[@booliganshootingsports]

Depends, are your windows post 1987? You’ll need the gluten free adhesive equipped sticker then. It’s a very complicated thing.

[@DesertTactical]

Nice. Plan to do this to my persuader 500a. It should fit right?

[@lorcel]

Mine doesnt fit to my mossberg 590’with factory heatshield.. but when looking at your video yours is also a factory heat shielf

[@booliganshootingsports]

Correct, this is factory but mine is a 500. You might not be able to crimp the 590 heatshield down enough due to the thicker barrel.

[@lorcel]

So there is no hope to use a magpul forend to mossberg 590 with factory heatshield? Im having problems too

[@yourstepdad_99]

will this work on the 590A1?

[@ALovelyBunchOfDragonballz]

Yep, I just did mine. I didnt crimp my heatshield, though. Well, technically i dont have an A1, i have the plastic trigger guard, but it is the 20" Heavy-walled, bayonet accepting 590.

[@toonahfeesh5851]

Can't see this working with the 590A1 because of the thicker barrel. Thanks for the informative vid though.

[@PKendall317]

Question. Online I see a lot of slide action tubes being advertised as 7-3/4" long. Will those work or does it HAVE to be the 7-5/8"?

[@nengsaravut9697]

ky

[@mangamaniaciam]

I'm highly surprised that you failed to use any oil for the retention nut!

[@tylertapp131]

Is that a factory heatshield? Do you think it would fit a 590 shockwave?

[@jorgecampos2643]

I wonder how that's gonna run when it gets hot

[@booliganshootingsports]

It’ll run exactly the same.

[@davidhodges6429]

I'm needing a forend for my Mossberg Shockwave.

[@jameswhoever3730]

7am

[@josuemederos8096]

Does this forend fit most shotguns?

[@booliganshootingsports]

Gun parts are generally gun specific. This one fits some Mossberg 500 and most Mossberg 590 models.

[@ravensnflies8167]

i used a castle wrench for an ar to take the nut off. i didnt have a wrench that came with mine.

[@stephenbinion6348]

Thanks. I was disappointed when I put my forend on.

[@DavidSilva-cd5nt]

Very good DIY video. I'm new at this and wonder what level of computer is needed to print out a 3D gun please?

[@Gianamaranto]

Will this fit a 590 shockwave with 18.5 barrel?

[@philliesreject]

Does that castle nut tool come with the foreend or was it a seperate purchase?

[@questioneverything1771]

I never would have thought about crimping the heatshield

[@juggernaut8647]

Works for maverick 88?

[@booliganshootingsports]

You’d have to replace the action tube.

[@cloud-wg3kf]

Can u add a pistol grip to the new forend?

[@KamikazKid]

yes, all MOE M-lok hand guards will accept Magpul M-Lok vertical grips or slide stops.

[@darkshock42mlg05]

Wait a minute this is a real gun isnt it. Was hoping it was for airsoft

[@iStrikerVX]

Is there any way I can get a Magpul M-LOK forend to be compatible with the RIA Armscor M5?

[@mrhamburger6936]

These are great forend hand grips I installed one on my shotgun fix the problem of my sleeve getting jammed in the forend grip while pheasant hunting could not get off a second shot now I can

[@ricardogallardo399]

So no to my molded forend that sits on top of receiver?

[@rickjones4406]

Nice little mod. Thanks for the tip.

[@facebookmakesmesick]

Shooting gun again...seems heatshield miles are rubs and slows down shooting. Guess I have to sand it down alittle.

[@nypigskin]

Crimping the heatshield to the barrel destroys the purpose of the heatshield. Might as well remove it.

[@booliganshootingsports]

It still has plenty of air gap between the barrel and the heatshield. It doesn’t even get warm when firing.

[@JanEnriquez707]

Will this forend fit on a 590 20ga?

[@trent_m3009]

Doesn’t that defeat the purpose of the heat shield? 😄

[@wk6069]

thanks for the video lg from Germany

[@michaelrussomanno5642]

That heat shield looks like shit crushed down like that

[@booliganshootingsports]

Looks the same as factory, only it wraps underneath the barrel instead of flaring out 🤷‍♂️

[@michaelrussomanno5642]

@@booliganshootingsports I disagree. I have a Retrograde and that crimping does not look good. Solid video still. But to each their own.

[@booliganshootingsports]

Regardless, it doesn’t matter of it looks pretty or not (even though it is a consistent, solid crimp the whole length of the affected area). It’s functional and necessary if you want to run this handguard with a heatshield.

[@panthersfan8494]

Hey, I just get a mossberg 500 tactical, it has a heat shield and muzzle brake... the forend is almost 8 inches, would magpul forend fit on my mossberg?

[@booliganshootingsports]

Panthers Fan you’d have to measure the actual action tube.

[@MrJtcash100]

Let me know when you don’t have to crush the heat shield to install one. These heat shields are popular now. Step it up magpul . You’re better than that.

[@RobbReport11]

So I have a question if anyone can help. I bought a mossberg 500 scorpion a little over a year ago. I’m wondering if I can also crimp the heat shield and make this work as well.

[@Toker33488]

Did it work? Did u crimp the heat shield

[@adamsbyknoll4809]

Great video, even better 90s friendship bracelet bruh

[@ty-wl7ko]

Great video, helps alot before making the forend purchase. Not sure if you would be able to answer or have some insite. Looking to add an aimtech warhammer in replacement of the heatshield. Wondering if it would even be worth trying to see if the M-lok forend would be compatible. Would look sweet if they were. Thanks!

[@ChuckJacksontampaphotographer]

So you DON'T have to totally disassemble the 500 to do this? Every other video I've seen says you have to - why is that?

[@booliganshootingsports]

No clue. This is a super easy install.

[@ValkerieSilk]

Awesome! Thank You...

[@sladestreet6086]

perfect vid! Let me know if you wanted me to send you some free zytel polymer heatshields to try out.

[@clittle1559]

awsome pieces and love the bracelet

[@SanitysVoid]

Does this mean to crimp the heat shield you will need a metal one?

[@booliganshootingsports]

Sanitys Void well yeah, you won’t be able to crimp a plastic heatshield .

[@rpfrompr]

Would this fit a 590M?

[@Shootertac]

Thanks for the info man 🫡

[@traveler7249]

As far as disassembly/cleaning, What is different/same with the existing Moss 590 and new 590"M"?

[@booliganshootingsports]

Traveler no clue, never worked on a 590. This is a 500.

[@1state152]

Would this work on a ria ag 12 gauge? I figure most 12 gauges are similar @Booligan Shooting Sports

[@booliganshootingsports]

Every shotgun is different. Unless it's a direct clone of the Mossberg 500/590 design, it won't work.

[@AwareWolf777]

How did you fix the heatsheild

[@booliganshootingsports]

Keep in mind, this isn’t on a factory made Shockwave. But I machined the heat shield off of the mount and welded it to the raptor lug

[@AwareWolf777]

@@booliganshootingsports I just got a 598 one that has that same Magpul charging But I want to put a heatshield on this shotgun as I did not have one when I purchased it

[@remyfuller]

Couldn't you have just dremeled the inside of the edges on the top of the forend to make it clear the heat shield without bending it? Unfortunately I have the 20 gauge so this forend won't work on mine either way 😞 (although I might try to modify it to fit if I can)

[@booliganshootingsports]

It's infinitely easier to bend the heatshield than to evenly sand/dremel down the inner edge of the heat shield. Sanding plastic like this with a dremel tool is a recipe for wavy bumps.

[@kylegreene1356]

Good tip on the vise. Good man.

[@dthompsont3796]

The heat shield has that gap because the heat will transfer to the metal shield if it's touching the barrel

[@booliganshootingsports]

And the gap remains. It’s not tight on the barrel, just closer.

[@MarkDamianGG]

What’s the overall length?

[@joefiandaca3060]

How difficult was it to bang the forend off ? Thank you great video

[@booliganshootingsports]

Not hard at all.

[@gfy305]

Great vid! I have a very old Mossberg 500 AB that was given to me by my dad and it has NEVER been cleaned. When I removed the forend nut, I see a little ring that appears to be stuck on the tube not allowing me to take off the forend. Is it really stuck or should I use a rubber mallet to remove it? Any advice? Thx!

[@minnesotajames1]

Did you find that it eventually wore off the coating on the heatshield? Mine did in a few places and I was surprised that happened.

[@tommynguyen5836]

Very good video, helped me out alot, cost me $0, fixed the problem I was having! 5/5 stars!

[@joedycook7870]

Do you have a video showing how to retain your heat shield. Thanks

[@booliganshootingsports]

My heatshield installation will only work on my specific build, not general Shockwave builds.