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Bullpup Unlimited Mossberg 500/590 Conversion Kit

   30 Reviews
| 9 Questions & Answers
Model: BPU-500
 
Condition: Factory New
 
Bud's Item Number: 411555648
 
UPC: 2-BPU500
 

Bullpup Unlimited Mossberg 500/590 Conversion Kit

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411554177
Any orders placed for this item on Jan 15th - Jan 25th...will NOT SHIP UNTIL Jan 26th. - See more at: https://www.budsgunshop.com/catalog/product_info.php/products_id/411554177/Bullpup+Unlimited+Remington+870+Conversion+Kit#sthash.VQXwPQWA.dpuf
Any orders placed for this item on Jan 15th - Jan 25th...will NOT SHIP UNTIL Jan 26th. - See more at: https://www.budsgunshop.com/catalog/product_info.php/products_id/411554177/Bullpup+Unlimited+Remington+870+Conversion+Kit#sthash.VQXwPQWA.dpuf

Introducing the Mossberg 500/590 Bullpup Conversion Kit from Bullpup Unlimited, Inc.  This conversion kit will take your 500 12g shotgun and shave down almost 10" from the overall length while retaining all the practicality and reliability of the Mossberg 500!  All the tools needed for conversion are included and it can be done in less than an hour, not to mention it's fully reversible!

  • Designed to accept a wide variety of aftermarket AR-style accessories
  • Familiar AR-style grip and safety Split-trigger for increased safety
  • Variety of rail mounting areas for tactical accessories
  • Super-smooth and contoured slide release area
  • Rugged shell deflector for left handed shooters
  • Ergonomically shaped and easy-to-grip slide forearm
  • Generous access to loading port
  • Conversion assembles easily with tools provided
  • Easy to follow conversion instructions included
  • Multiple ambidextrous sling points for 1-point and 2-point sling
  • Field strips with tools included under butt pad
  • Manufactured from rugged, hi-tech, molded materials
  • Features an easy-to-grip, non-reflective surface texture
  • Does not in any way alter the original shotgun
  • Overall thickness: 2.75, width: 8, length: 28

*This item is the conversion kit only, gun not included. 

This conversion kit only fits 2 ¾ and 3 inch 12 gauge Mossberg 500 shotgun with plain barrel with bead sight. It will not work with a 3 1/2 inch receiver, ribbed barrel, 18.5 inch barrel with rifle sights or Mossberg’s with bayonet lugs or with a barrel brake that is non-removeable.

Maverick’s with the one piece forearm will not work(these are the newer models) must have a 2 piece forearm

For Any Questions about compatibility check - 

http:www.bullpupunlimited.com/faq

If you have any questions about assembly after you receive your unit you are welcome to contact our Bullpup Rep - J.J.

He can be reach by email or phone Monday thru Friday 10am - 5pm est.

 Phone - (270) 585-3447

Email -   info@bullpupunlimited.com  - preferred method.
$299.00
*Cash or Retail
$299.00
*Cash or Retail
Financing Available
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Financing Available
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Retail Store Availability
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*Please Note!! Many of our pictures are stock photo\'s provided to us by the manufacturer and do not necessarily represent the actual item being purchased. Please verify this picture accurately reflects the product described by the title and description on this page before you place your order.
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Bullpup Unlimited Mossberg 500/590 Conversion Kit
Model
BPU-500
Condition
Factory New
Bud's Item #
411555648
UPC
2-BPU500
Manufacturer
Bullpup Unlimited
411554177
Any orders placed for this item on Jan 15th - Jan 25th...will NOT SHIP UNTIL Jan 26th. - See more at: https://www.budsgunshop.com/catalog/product_info.php/products_id/411554177/Bullpup+Unlimited+Remington+870+Conversion+Kit#sthash.VQXwPQWA.dpuf
Any orders placed for this item on Jan 15th - Jan 25th...will NOT SHIP UNTIL Jan 26th. - See more at: https://www.budsgunshop.com/catalog/product_info.php/products_id/411554177/Bullpup+Unlimited+Remington+870+Conversion+Kit#sthash.VQXwPQWA.dpuf

Introducing the Mossberg 500/590 Bullpup Conversion Kit from Bullpup Unlimited, Inc.  This conversion kit will take your 500 12g shotgun and shave down almost 10" from the overall length while retaining all the practicality and reliability of the Mossberg 500!  All the tools needed for conversion are included and it can be done in less than an hour, not to mention it's fully reversible!

  • Designed to accept a wide variety of aftermarket AR-style accessories
  • Familiar AR-style grip and safety Split-trigger for increased safety
  • Variety of rail mounting areas for tactical accessories
  • Super-smooth and contoured slide release area
  • Rugged shell deflector for left handed shooters
  • Ergonomically shaped and easy-to-grip slide forearm
  • Generous access to loading port
  • Conversion assembles easily with tools provided
  • Easy to follow conversion instructions included
  • Multiple ambidextrous sling points for 1-point and 2-point sling
  • Field strips with tools included under butt pad
  • Manufactured from rugged, hi-tech, molded materials
  • Features an easy-to-grip, non-reflective surface texture
  • Does not in any way alter the original shotgun
  • Overall thickness: 2.75, width: 8, length: 28

*This item is the conversion kit only, gun not included. 

This conversion kit only fits 2 ¾ and 3 inch 12 gauge Mossberg 500 shotgun with plain barrel with bead sight. It will not work with a 3 1/2 inch receiver, ribbed barrel, 18.5 inch barrel with rifle sights or Mossberg’s with bayonet lugs or with a barrel brake that is non-removeable.

Maverick’s with the one piece forearm will not work(these are the newer models) must have a 2 piece forearm

For Any Questions about compatibility check - 

http:www.bullpupunlimited.com/faq

If you have any questions about assembly after you receive your unit you are welcome to contact our Bullpup Rep - J.J.

He can be reach by email or phone Monday thru Friday 10am - 5pm est.

 Phone - (270) 585-3447

Email -   info@bullpupunlimited.com  - preferred method.

30 Reviews. 4.8 out of 5 Stars!
5 Stars
84%
4 Stars
10%
3 Stars
7%
2 Stars
0%
1 Star
0%
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David F on 03/29/2023
Rating:   5 of 5 Stars!

Dec 2022. Many more positive than negative. Heavy and not cheap. Hate the A2 grip so I ground off the finger notch. But, I finally got my Mossberg bullpup having regretfully missed out on the factory one since the 1980's. Yeah, I'm that old. Takes some thought and patience to put together. But smooth, cause the donor was well worn in and smooth. Swings well in room to room. Controls well thought out. My choice over buying a Kel TEC. Doesn't feel toyish and I felt was worth the price.

Robert F on 03/30/2022
Rating:   5 of 5 Stars!

Bought this conversation kit for my mosberg 500. The kit was a perfect fit and I’m extremely happy with it. It turned my full length shotgun into a tactical weapon you can use in home defense and turn around in a closet.

Martin H on 03/30/2022
Rating:   5 of 5 Stars!

This kit turned my Mossberg 500 into my favorite gun to shoot. What a blast! (Pun intended) The ergos are fantastic and the trigger feels great even though you’re pulling on a remote trigger that’s linked to the factory one buried in the stock. The recoil is minimized greatly and this thing gets TONS of attention at the range. I put some cheap flip up sights on it as well as a cheap light. So much fun awaits anyone who does this fully reversible conversion. If you’re on the fence, just do it!

Traves T on 10/05/2021
Rating:   5 of 5 Stars!

This was the 1st purchase I made from Buds Gun Shop. Since then I have bought a number of Savage rifles from them and have never been disappointed. This kit went together quick and easily and does what I was looking for. Would highly recommend it if your looking to build that special little pump.

Gabrial S on 01/22/2021
Rating:   5 of 5 Stars!

I converted my Mossberg 500 and it is like I got a new gun. It sets good on the shoulder for most people although my wife felt it was a little long for her small frame. The function and mounting is solid which was a concern before I did the conversion. The rail space is amazing and everything fits without any special modification. I will look forward to shooting trap with it to really see how it runs. Great product and Buds delivered fast!

Jc H on 07/02/2020
Rating:   5 of 5 Stars!

Awesome Bullpup kit. Easy to convert. Shotgun is much more useful for home defense now.

Robert W on 06/03/2020
Rating:   5 of 5 Stars!

This bullpup stock is Fantastic. It's short plus all the weight is back toward the shoulder which makes it so much easier to hold and maneuver. I can easily switch from between both my 18.5" security barrel and my 28" Ribbed Accu-choke hunting barrel. The only problem I ran into was the forearm slide tube was 1/8" longer than both my mossberg factory forend and also my CHOATE Machine & Tool, Inc forend which were both the exact same length. The slide tube nut would only just barely thread on and bottomed out not being able to sock down as far as with either the factory or CHOATE forends. I trimmed 1/8" off the front of the Bullpup Unlimited forearm slide tube making it the exact same length as the other two forends which corrected the problem and the nut was then able to tighten down as far as on the other two forends.

Terry M on 05/13/2020
Rating:   5 of 5 Stars!

I have had this bullpup conversion on my Mossberg 500 12ga with an 18.5 inch barrel for two years now. The instructions were clear, the kit installed very easily, and the gun functions flawlessly in the stock. The controls on the kit work the controls on the gun very well. The trigger is not bad for a bullpup. I really enjoy the extra large and soft buttstock pad, as it takes a lot of the kick out of the gun. The shorter gun tucks into your body nicely and I like the balance of the weapon. I currently have Magpul pop up sights on the gun and they work fine. I had to file down the front sight pin to just a nub to get the point of aim up high enough and correct at 15 yards. The gun kit requires some time and effort to disassemble it to clean the gun, as there are a lot of screws holding it all together, but it’s not difficult. Loading the gun under stress is more difficult and will require practice because the loading gate is near your armpit and out of your line of sight. The kit works well for both right handed and left handed shooters. The only issue I have with the kit is the forend release button on the Mossberg 500 is designed to be easily actuated with your index finger while gripping a traditional shotgun stock. Any pistol grip conversion to this gun means your have to let go of the grip and contort your hand to push the button to close the action on the first round. Be careful. The rear sight is much closer to your face than on a traditional shotgun setup so you have to take care to hold the gun firmly and watch your eye relief distance or you will go home from the range with a cut eyebrow. This stock renders the gun useless for trap and skeet shooting but an 18.5 inch barrel isn’t ideal for that anyway. If you want a super cool looking bullpup shotgun that always draws positive attention at the range, this kit works very well with this shotgun. If you shoot clays or want to maximize your shotgun as a tactical weapon, I would leave the gun in a more classic stock.

Faron F on 07/26/2019
Rating:   5 of 5 Stars!

This conversion allows shorter and quicker smoother loading, firing and ejecting brass and plastic like nothing of the original product.

Ernest A on 04/27/2019
Rating:   4 of 5 Stars!

After disassembling my Mossberg Maverick 88, and reading through ALL of the instructions included with this kit prior to assembly, this kit went together in less than an hour. All tools and screws were included. I recommend sorting the different screw types and lengths prior to assembly. This is a great and simple kit for the price.

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