Arredondo PAD FITS 9MM/.40 S&W M&P,5 OR 6 RDS,1-1/4'' ADDL MAG OAL S&W/MP9/40

Two-piece, extended base pad replaces factory pad to increase magazine capacity without compromising reliability. Molded from impact-resistant, fiberglass-reinforced nylon to protect your magazine from damage when ejected onto hard ground or pavement. Checkered bottom panel assists in fast, positive, non-slip, mag changes. Locks securely to the magazine body and lets you retain the factory magazine spring. Removes quickly and easily to reinstall factory pad and return mag to original spec. For low-stress applications where the mag will not be ejected onto hard surfaces. Use the L-shaped locking insert for extra-secure attachment and five additional rounds for 40S&W or an additional six rounds for 9mm.  Overall magazine length will remain below 140mm for competition use.