Why did you choose this product?
Easily installed and fits perfectly. My only complaint would be the strong "rubber smell" of the buttplate pad. I'm leaving it out in the open air for a while to breath....
ProMag Mossberg Six Position Stock/ Pistol Grip/ Forearm
This ProMag Mossberg Shotgun Stock Kit includes an AR-15 M4 collapsible six-position stock, a tactical pistol grip and a Tri-Rail forend with removable vertical grip. This set fits Mossberg 500/ 590 12 gauge shotguns.
ITEM#: 13064355This ProMag Mossberg Shotgun Stock Kit includes an AR-15 M4 collapsible six-position stock, a tactical pistol grip and a Tri-Rail forend with removable vertical grip. This set fits Mossberg 500/ 590 12 gauge shotguns.
- Forearm features Picatinny rails
- Up to six additional shotshells can be carried on the stock with removable shell holders
- Constructed from injection molded black polymer
- All mounting hardware included
- Butt Stock: 9.63 inches long x 6.25 inches wide x 2.75 inches high
- Forend: 6.25 inches long x 2.25 inches wide x 1.5 inches high
Please note: The Tri-Rail Forearm is for Mossberg 500 series 12 gauge pre-2008 production.
The Tri-Rail Forearm will not fit new Mossberg 500 12 gauge shotguns the new pinned action bar (Maverick 88 style) forearms.
The Tri-Rail Forearm will not fit Maverick 88 shotguns.
The Tri-Rail Forearm is only for 12 gauge shotgun.
|Dimensions||Butt Stock: 9.63 inches long x 6.25 inches wide x 2.75 inches high ; Forend: 6.25 inches long x 2.25 inches wide x 1.5 inches high|
- Disclosures & Guidelines
- Filter By:
- Most Helpful
- Most Recent
Forewarned! According to ProMag, Mossberg made pre-2008 500 series shotguns with various slide lengths. Their product only fits 2 of the slide lengths without any modification. When the slide did not fit my gun with (too long) or with out (too short) the extender I called Pro-Mag. Their representative told me to cut the extender down to length and I would have no problem. Wrong. Once I cut the part, the nut from the slide will not fit into the extender to reach the threads. The extender is now cut and worthless. The new forearm piece moves front to back about 1/2 inch before engaging the slide. Unacceptable. The buttstock seems to fit an work fine.Read More
Easily installed and fits perfectly. My only complaint would be the strong "rubber smell" of the buttplate pad. I'm leaving it out in the open air for a while to breath.Read More
its a good kit but they really need to put a better rubber butt. when i was shooting with it, its kicking like theres no rubber butt on it.Read More
Had no problems with assembly once I figured out how to asemble product. Fit great and looks awesome. Just a little worried about the forgrip but it performed fine when fired in rapid succession.Read More
This made my blah shotgun look great. If you have the newer model you will need the Hogue extened nut and to sand out the end piece of the forend but that is easy and all goes together easily.Read More
This was my first time doing any gun modifications like this. The directions were easy enough to use out of the box (but youtube videos made it even easier). The promag stock and pistol grip set was absolutely awesome. It changed the entire look and functionality of my 40 year old mossberg 500. It now looks almost as good as anything purchased for 400 or more off the gun rack. Stock is sturdy and fit well. The forearm was easy to replace and has a nice feel. I am very pleased with this product.Read More
I would buy this product again. I have not had the chance to shoot the gun but I believe it will work great.Read More
very very nice for not a lot of moneyllllllllllllllllRead More
Great price, I've seen just the fore-arm section made by other manufacturers priced at fifty bucks, and here you get the whole kit & kaboodle for about $73.00. All the parts fit my Mossberg perfectly, they even warn you it will only fit the older models. It even came with the tools needed to dis-assemble and assemble the components.Read More
Very good kit that completely turn your mossberg into a tactical shotgun. Very easy to upgrade.Read More
Questions & Answers
Has everything i need for my shotgun plus great price
will this fit on new haven 600ct 20 gage
Unfortunately, it will not fit.
Shopping Tips & Inspiration
Best Ways to Get Ready for Spring
Best Ways to Get Ready for Spring from Overstock.com. Let the season inspire you to renew and refresh. Try these ideas and make the most of spring.
Top 5 Father's Day Gifts for Adventurous Dads
Top 5 Father's Day Gifts for Adventurous Dads from Overstock.com. For the thrill-seeking dad, there's nothing like a Father's Day gift that taps into his adventurous side.
Best Father's Day Gifts for Sports Fans
Best Father's Day Gifts for Sports Fans from Overstock.com. Show Dad you're his biggest fan with gifts any sports lover would appreciate.
Buying Gifts for Sports Lovers
Buying Gifts for Sports Lovers from Overstock.com. Our guides provide customers with information about buying gifts for sports lovers and advice about our many brand-name products.
Buying Gifts for Extreme Sports Lovers
Buying Gifts for Extreme Sports Lovers from Overstock.com. Our guides provide customers with information about buying gifts for extreme sports lovers and advice about our many brand-name products.
Shipping & Returns
Usually leaves our warehouse in 1 business day. *
Standard Return Policy:
Standard shipping details
Expedited shipping details