Shield Arms S15 – 15 Round Magazines


15 round steel magazine for the Glock® 43X/48, same size as the Glock® 10 round magazine with Black Oxide Finish. FREEDOM RESTRICTED STATES SEE BELOW.

Out of stock


The S15 magazine is a patent-pending, flush-fitting 15 round magazine for the Glock® 43X and Glock® 48. The S15 is a steel magazine, and is the same length as the OEM Glock® 10 round magazine, but holds an additional 5 rounds.


Glock® pistols and magazines are known for reliability – the S15 maintains that same Glock® reliability, while giving you a 50% increase in magazine capacity in the same overall footprint.

We accomplished this increased capacity with our patent-pending magazine geometry, allowing the rounds to stagger, thereby fitting more in the same amount of space.

The S15 is currently only setup for right handed mag catch (left side of pistol).


We recommend swapping out your plastic OEM mag catch with a metal mag catchHere’s why.


  • 15 round capacity
  • Same length as an OEM Glock 43X/48 magazine
  • Easy to remove, impact resistant base pad
  • High visibility follower
  • High lubricity finish, Black Oxide coating
  • Made in the USA
  • Patent-pending


These S15 magazines come standard with their Black Oxide coating. Black Oxide offers only minimal corrosion resistance, so we recommend that you wipe down the exterior of the magazine with your favorite gun lubricant to prevent corrosion.


Like all Shield Arms products, the S15 magazine comes with a 100% lifetime warranty against manufacturing defects. Additionally, we also offer a Spring for Life Guarantee – wear out your spring, get a new one for free, for life.


If you live in a state that restricts magazine capacity we cannot ship to you.

If you purchase a magazine and you are form a restricted state, we will cancel your order and charge you a 5% cancellation fee.

Additional information

Weight .5 lbs
Dimensions 7 × 4 × 2 in