The Shield Arms S15 Magazine boosts the capacity of your Glock® 43X or 48 an additional FIVE rounds, from 10 to 15, without extending any farther out the magwell than the factory magazine. The result is a super-compact, easy-to-carry 9mm pistol with the same mag capacity as the much larger Glock® 19!The S15 gives you this firepower boost without sacrificing the reliability of your pistol. The Shield crew designed an all-steel mag body that frees up more interior space than found in the factory's thicker polymer-and-steel walled mags. The redesigned interior geometry introduces some "stagger" in the round stack - enough to squeeze in an extra 5 rounds. At the same time, when the S15 magazine is seated, the base plate still fits flush across the bottom of the grip.
The S15's no-flex body of hardened steel has a durable, satin-black, self-lubricating, synthetic finish.The bottom line: The Shield Arms has produced a rugged, reliable magazine with 50% more capacity with NO need for any extended base pad that sticks out below the grip and makes your EDC pistol less easy to conceal!