SGA® AMBIDEXTROUS BUTTSTOCK FOR MOSSBERG® 500/590

SGA® AMBIDEXTROUS BUTTSTOCK FOR MOSSBERG® 500/590 Reviews & Ratings

The SGA Stock is an ambidextrous, user-configurable buttstock designed to add much-needed adjustability to the tried-and-true Mossberg 500 / 590 / 590A1 12-gauge series of shotguns. Its features include a spacer system for length of pull adjustment, improved grip ergonomics, a recoil-reducing butt-pad, and optional cheek risers for use with optics/raised sights and other accessories.


The Mossberg SGA brings Magpul design and engineering to another classic American firearm. Available in Black, Flat Dark Earth, Stealth Gray and Orange to adapt to the mission at hand.


Made in the USA.


FEATURES

  • Spacer-adjustable lop in 1/2" increments from 12.5" to 14.5"
  • Recoil-reducing butt-pad
  • Integral right/left 1.25" sling loops



SPECS

  • Platform: Shotgun
  • Compatibility: Mossberg® 500/590/590A1 12-gauge
  • Butt-Pad Dimensions: 1.5 x 5.0 in.
  • LOP Adjustment Range: ~12.3-14.3 in.
  • Weight: 1.5 lbs. (with two Spacers installed)
  • Width of Butt, max: 1.5 in.
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5 Stars
94%
4 Stars
3%
3 Stars
0%
2 Stars
0%
1 Stars
3%
Reviews Summary
Overall, customers are very pleased with the Magpul SGA Ambidextrous Buttstock for Mossberg 500/590, highlighting its quality, comfort, and ease of installation. Many appreciate the adjustable features and solid build. A few reviewers noted minor installation challenges or design quirks, but these do not detract significantly from the positive reception of the product.
What Reviewers Are Saying
Product Quality
94%
Reviewers consistently praise the high quality of the Magpul buttstock, noting its solid build and thoughtful engineering. Many find it significantly enhances the shooting experience, with a comfortable fit and improved ergonomics enhancing control.
Ease of Installation
81%
Most customers found the installation process straightforward and quick, allowing them to easily upgrade their shotguns. Despite some mention of minor issues, the overall sentiment is that installation is hassle-free.
Adjustability
66%
The adjustable length of pull is frequently highlighted as a major benefit, accommodating shooters of different sizes and preferences. This feature has contributed to a more personalized shooting experience, making the product suitable for various users.
Comfort
66%
Many reviews emphasize the comfort of the stock, with particular commendation for the recoil pad that helps absorb shock during shooting. Users report that the natural grip angle enhances comfort, making it a favorable option for extended use.
Customer Photos & Videos
5
Great stock
Shipping was fast and secure. Stock came with all of the mounting hardware, but no instructions, which can be found on Magpul's website. Easy to install and works great.
by NORMAN M. on October 19, 2026
Verified Purchase
Was this review helpful? 0
5
Feels solid.
Feels solid when shooting. Awesome product
Would you recommend this? Yes, I would recommend to a friend
by David J. on March 20, 2026
Verified Purchase
Was this review helpful? 0
5
Making a Shockwave useful
The zero dollar tax stamp for an SBS prompted my purchase of this product. The high quality of Magpul products and ease of installation helped the decision.
Would you recommend this? Yes, I would recommend to a friend
by David K. on February 28, 2026
Verified Purchase
Was this review helpful? 3
5
Brownells and Magpul….a winning team!
Thank you for the excellent service. This is my fourth Magpul stock, two on Mossbergs and one each on Beretta and Remington. They all make those shotguns so much more user friendly for me. You guys are Aces!
by Paul D. on October 02, 2025
Verified Purchase
Was this review helpful? 0
5
Always reliable
Brownells offered a good price and fast delivery. Magpul offers an improved shooting experience. The sun rises in the east,…
Would you recommend this? Yes, I would recommend to a friend
by Scott D. on August 13, 2025
Verified Purchase
Was this review helpful? 0
5
Nice stock upgrade
Easy to install on a Maverick 88. Good option for adjusting the length of pull.
Would you recommend this? Yes, I would recommend to a friend
by GLENN M. on August 08, 2025
Verified Purchase
Was this review helpful? 4
5
Perfect fit on Mossberg Maverick 88
Fits like a glove on my 17-year old Mossberg Maverick 88! The installation is a little tedious but worth it. My very first firearm purchase as a young adult just got a much needed upgrade. Thank you Brownells for having this in stock!
Would you recommend this? Yes, I would recommend to a friend
by Roy B. on February 01, 2025
Verified Purchase
Was this review helpful? 4
5
Magpul stock
Awesome stock
by GREG T. on October 25, 2024
Verified Purchase
Was this review helpful? 0
5
Added a little color to my POF Tombstone
I acquired a POF Tombstone. It uses the Magpul stock. I replaced the stock and added the Magpul rail colors to upgrade it from being all black.
Would you recommend this? Yes, I would recommend to a friend
by Frederick S. on June 02, 2024
Verified Purchase
Was this review helpful? 1
5
Great stock
This stock is a night and day change on how my shotgun fits me. I highly recommend this.
by DOUGLAS W. on February 19, 2024
Verified Purchase
Was this review helpful? 1