MPA Side Folder Assembly with Stock – Full Size Steel Frame – 9mm/57

Aluminum lowers have serial number prefix FX or FJ. Steel frame lowers have serial # prefix B, F, J or V.

Side Folder Assembly Including:

• Side Folder Mechanism
• L-Bracket
• Fasteners
• MPA Low Profile Stock

This complete system will allow you to attach our Side Folding Stock to an MPA Carbine. The stock will fold towards the shooters left side, away from the ejection port. The side folder locks in both the “open” and “closed” position.

This is designed for MPA 20 Series and 57 Series Carbines, 30 and 57 Series Pistols.

Please note, if this item is added to any MPA Pistol, this converts the weapon into an SBR, which is an NFA weapon.