Elite Tactical Systems Group (ETS) builds this 21-round extended magazine (part no. ETS SW9-MP-21) for the Smith & Wesson M&P in 9mm, well beyond the pistol’s standard factory capacity. It shares the ETS line’s translucent polymer body for a visible round count.

Key Specifications

• Chambered in 9mm Luger.
• Holds 21 rounds, an extended capacity for the M&P.
• Fits the Smith & Wesson M&P.
• Molded from ETS’s see-through polymer for a visible round count.
• Manufactured by Elite Tactical Systems Group.

Frequently Asked Questions

Will this work for concealed carry? A 21-round magazine will extend well below the grip; it’s better suited to range use or a duty/home-defense role than deep concealment.

Does this fit the M&P Shield too? No, ETS lists this 21-round magazine for the full-size M&P family, not the smaller single-stack Shield.

Buy the ETS Smith & Wesson M&P 9mm 21-Round Magazine

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