Ruger builds this finger extension (part no. 90343), a small black plastic floorplate accessory rather than a standalone magazine, giving the shooter’s little finger a resting surface below the grip for better control of the compact SR9c and SR40c.

Key Specifications

• Detachable finger-extension floorplate, not a standalone magazine.
• Built from black plastic.
• Compatible with the 10-round Ruger SR9c (9mm) factory magazine.
• Compatible with the 9-round Ruger SR40c (.40 S&W) factory magazine.
• Gives the little finger a resting surface below the grip for improved control.
• Genuine Ruger factory part.
• Style is listed as detachable with finger extension.
• An affordable replacement or upgrade for a lost or damaged factory extension.
• Manufactured by Ruger / Sturm, Ruger & Co.

Frequently Asked Questions

Does this add extra rounds to my magazine? No, it’s a finger-rest floorplate, not a capacity-adding extension — it improves grip on the SR9c/SR40c’s compact frame.

Will this fit both the SR9c and SR40c? Yes, Ruger lists it as compatible with the 10-round SR9c (9mm) and 9-round SR40c (.40 S&W) factory magazines.

Buy the Ruger SR9c/SR40c Magazine Finger Extension

Order it from our Lubbock, Texas gun shop. Browse our full handgun magazines selection.