Magpul SGA Stock | Mossberg 500/590/590A1

Description

The Magpul SGA Stock brings adjustable, ambidextrous functionality to the Mossberg 500 / 590 / 590A1 12-gauge platform. It uses a spacer system to change length of pull, improves grip ergonomics, and adds a recoil-reducing butt-pad for more comfortable shooting.

Optional cheek risers accept raised sights or optics, making the SGA a practical upgrade for hunters, competition shooters and duty users who need a more custom fit from a proven shotgun design. Made in the USA.

Features — Fit & Ergonomics:

• Spacer system allows length-of-pull adjustment in 1/2″ (12.7 mm) increments
• Adjustable LOP range approximately 312–368 mm (≈12.3–14.5 in) depending on spacer configuration
• Improved grip geometry for better control and repeatable hand placement
• Optional cheek risers for use with optics or raised sights
• Replaceable, recoil-reducing butt-pad for increased comfort during extended shooting sessions

Features — Construction & Durability:

• Rugged polymer construction engineered for long service life
• Ambidextrous design works for left- and right-hand shooters without modification
• Low-profile form factor that retains the shotgun’s practicality for hunting and field use

Sling compatibility:

• Integral left/right 1.25″ (31.8 mm) sling loops for direct attachment
• Works with a variety of strap-style slings and quick-disconnect swivel systems when used with compatible hardware

Compatibility:

• Mossberg 500 / 590 / 590A1 12-gauge shotguns