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Customer Reviews
Most Recent Reviews
Perfect fit with the radian magwell by Jay Atkinson, Verified Owner, February 17, 2026
Runs like a champ. Fits perfectly. And looks amazing
Most Recent Reviews
Shield 17 rd 43x magazine by JM GlockandSig, Verified Owner, January 10, 2026
Was skeptical about buying a used 43x that already had a shield mag release and magazine. Was it because the mags were unreliable…welp I haven’t had a single misfire between the 15 that came with it or this 17 rounder
Most Recent Reviews
Great magazine. Fits my G43X extremly well. No problems with cycling or releasing the mag.
Most Recent Reviews
Shield Arms Mag by Steve, Verified Owner, July 31, 2025
Excellent magazine. It fits as good as the factory mag (maybe better) in my G43X. It's a great looking mag.
Read All 4 Reviews
Gun Make:
Glock
Gun Model:
Glock 43X, Glock 48
Caliber:
9mm Luger
Magazine Capacity:
17 Round

Code: 3T1-PMG-GHT17R-SLDS15ME2INSG3BLK-17RD

MPN: S15-ME-2INS-G3-BLK

List: $68.99Save $1.00
$67.99

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Certain firearm magazines and extensions are subject to maximum capacity restrictions based on state and local laws. Currently, we are unable to sell these products to some locations. For a complete list of these restrictions, please visit our policy page.

By continuing with your purchase, you agree to adhere to all applicable laws and regulations.  

Product Info for Shield Arms S15 Gen 3 Glock 43X/48 15 Round w/ 2 Round Mag Extension Pistol Magazine

The S15 magazine is a Patented, 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.image

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.

Specifications for Shield Arms S15 Gen 3 Glock 43X/48 15 Round w/ 2 Round Mag Extension Pistol Magazine:

Manufacturer: Shield Arms
Gun Make: Glock
Gun Model: Glock 48, Glock 43X
Caliber: 9mm Luger
Magazine Capacity: 17 Round

Features of Shield Arms S15 Gen 3 Glock 43X/48 15 Round w/ 2 Round Mag Extension Pistol Magazine:

  • Unique easy access floor plate design to service or clean the magazine body without the need to remove the magazine extension from the magazine body.
  • Index cuts on the extension body to increase grip when coming out of a magazine pouch.
  • Machined from billet 6061 aluminum
  • Type 2 anodized
  • Adds 2 rounds to Shield Arms S15 Gen 3 Nitrocarb magazine 
  • Comes with a 11 coil plus power spring
  • Fits most aftermarket flared mag wells
  • Lifetime warranty

Package Contents:

  • Shield Arms S15 Gen 3 Glock 43X/48 15 Round w/ 2 Round Mag Extension Pistol Magazine

Shield Arms S15 Gen 3 Glock 43X/48 15 Round w/ 2 Round Mag Extension Pistol Magazine Orderable Models

List of Orderable Models

  • Shield Arms S15 Gen 3 Glock 48/43X 17 Round Flush 9mm Luger Pistol Magazine, SLDS15ME2INSG3BLK , MPN: S15-ME-2INS-G3-BLK , Code: 3T1-PMG-GHT17R-SLDS15ME2INSG3BLK-17RD
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