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 Stars

2 Stars

1 Stars

Reviews Summary

Customers rave about the SGA® Ambidextrous Buttstock, praising its comfort, adjustability, and solid construction. Many found installation straightforward and appreciated the ergonomics, enhancing their shooting experience. However, some raised concerns about minor installation challenges and a lack of certain features, like folding capabilities. Overall, it's a highly regarded upgrade for shotguns.

What Reviewers Are Saying

Ease of Installation

70%

Many reviews highlight how easy the buttstock is to install, with some users reporting the installation takes only a few minutes. While a couple referenced minor issues with existing parts, the majority found it straightforward and user-friendly.

Comfort and Ergonomics

80%

Comfort is a recurring theme, with numerous reviewers noting the stock's well-engineered design enhances shooting comfort and reduces felt recoil. Users appreciate the grip and cheek weld, making longer shooting sessions more enjoyable.

Adjustability

75%

The adjustable length of pull is a significant feature praised by many. Reviewers noted that it accommodates various body types and shooting styles, providing versatility to fit individual preferences and clothing.

Quality of Build

85%

The overall build quality of the buttstock received high marks, with users commenting on its durability and solid construction. Many praised Magpul's reputation for quality, claiming the stock feels robust compared to cheaper alternatives.

Minor Installation Challenges

20%

Some reviews pointed out minor annoyances during installation, such as difficulties with the provided tools and parts that might complicate trigger group removal for cleaning. A few users suggested improvements for future models.

Overall Satisfaction

90%

Overall, customers express a high level of satisfaction with the SGA buttstock, indicating it's a worthwhile investment for upgrading shotguns. Many mentioned they would opt for this product again, reflecting strong loyalty to the brand.

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Mossberg 500 stock

I bought the stock to put on a 20 gauge, knowing the receiver is smaller. No it is not a flush mount along the sides, but the difference is trivial to me; it did not matter. One thing I did adjust was the opening behind the trigger guard. This is a known problem for 12 gauge guns, too. You cannot remove the trigger assembly with the stock attached as is. Many use a Dremel. I used a dowel rod and 100-grit paper and did it in small steps. Very happy with the stock and the options I now have on 20g

Would you recommend this? Yes, I would recommend to a friend

by JOHN TERTULIANI on October 14, 2025

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