S15 +2 Pre-Installed Magazine Extension

Shield Arms S15 magazine with an installed Shield Arms +2 magazine extension, for a total of 17 rounds.
SKU: S15-ME-2INS
*
  • Not available
  • Not available
  • Not available
  • Not available
  • Not available
  • Not available
Availability: In stock
$68.99
i h

Buy pre-installed and let us do the work for you! Save time and ensure perfect installation with the Shield Arms S15 +2 Pre-Installed Magazine Extension.

Contents

  • (1) S15 Gen 3 Magazine
  • (1) Pre-installed anodized Shield Arms S15 +2 Magazine Extension (color options available)

Mag Catch Requirement

It is required to replace your plastic OEM mag catch with either our standard steel mag catch or our premium steel mag catch. Using another manufacturer’s catch or failing to upgrade may result in reliability issues. S15 magazines are designed to work exclusively with Shield Arms steel mag catches.

Mag Specifications

  • 17+1 total round capacity
  • Same base length as OEM Glock 43X/48 magazines
  • Pre-installed anodized Shield Arms S15 +2 Extension
  • Works with Shield Arms Carry or Premium Magwell
  • Black Nitrocarburized QPQ finish
  • Made in the USA
  • Patented design

Mag Extension Features

  • Type-2 anodized finish in multiple color options*
  • Adds 2 rounds to the S15 magazine
  • Unique easy-access floor plate design for servicing or cleaning without removal
  • Index cuts on the extension body to improve grip when drawing from a magazine pouch
  • Light but sturdy – machined from billet 6061 aluminum
  • Comes with an 11-coil plus power spring
  • Compatible with Shield Arms S15 magazines only
  • Works with Shield Arms Carry or Premium Magwell
  • Fits most aftermarket flared mag wells
  • Proudly made in the USA

*Note: In 2025, the anodized shade of the color option 'Mud' slightly changed. Items previously purchased in this color may not be an exact match to the new shade.

Warranty

Like all Shield Arms products, our S15 pre-installed magazines and accessories come with a 100% lifetime warranty against manufacturing defects. Additionally, we offer our Spring for Life Guarantee: wear out your spring, get a new one for free, for life.

ODA Green

Used on: magazine extensions, magwells

ODA's (Operational Detachment Alpha) are the boots on the ground operational teams of a Special Forces Group. This color began as a special run for a deployed ODA. In continued support we have decided to continue the color as a standard offering and donate a portion of the proceeds to The Green Beret Foundation. Finish is anodized in green.

QPQ Nitrocarburizing Surface Treatment

Used on: magazines, barrels, slides

QPQ Nitrocarburizing is a type of surface treatment used to enhance the durability and corrosion resistance of metal parts. The process involves heating the metal in a controlled environment, where nitrogen and carbon are introduced to the surface of the metal. This forms a thin layer of a hard compound called "nitrides," which increase the surface hardness of the metal.

During the QPQ Nitrocarburizing process, the metal is immersed in a special salt bath and heated to high temperatures. The salt bath contains a mixture of chemicals that release nitrogen and carbon, which penetrate the surface of the metal. The process is carefully controlled to ensure that the nitrogen and carbon penetrate to a specific depth, creating a uniform layer of nitrides on the metal's surface.

The resulting nitride layer provides many benefits to the metal parts, including increased hardness, wear resistance, and corrosion resistance. This treatment helps to increase the lifespan and durability of metal parts, making them more reliable and long-lasting.

Any “scuffing” you see in the surface finish is completely normal, and will not affect the durability or corrosion resistance of the steel.

Electroless Nickel Plating

Used on: magazines

Silver electroless plating offers superior electrical conductivity and corrosion protection with excellent deposit uniformity and adhesion properties. This bright, reflective finish provides outstanding solderability and contact resistance while maintaining the consistent thickness and coverage that electroless plating processes are known for. Black electroless nickel plating provides these same exceptional deposit properties - including lubricity, hardness, and corrosion resistance - but with a fully conductive and uniform black surface finish that combines superior performance with an attractive dark appearance.

This item is controlled for export by the International Traffic in Arms Regulations (ITAR). Please check your state and local laws regarding magazine capacity restrictions.

Freedom Restricted States

If you live in a state that restricts magazine capacity we cannot ship to you unless you are law enforcement or otherwise exempt. If you are exempt from your state's ban please send us a copy of your documentation or official email to [email protected]. Please include your order number.

If you purchase from a ban state and you are NOT exempt, we will cancel your order and charge you a 5% cancellation fee.

Notice

GLOCK® is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. and GLOCK Ges.m.b.H.  Neither Shield Arms nor this site are affiliated in any manner with, or otherwise endorsed by GLOCK, Inc. or GLOCK Ges.m.b.H.  The use of "GLOCK" on this and associated pages on our website is merely to advertise the sale of GLOCK® pistols, parts, or components. For additional genuine GLOCK, Inc. and GLOCK Ges.m.b.H products and parts, visit www.glock.com.

Products specifications
Firearms Manufacturer Glock
Firearms Model Glock 43X/48
Customers who bought this item also bought
Shield Arms S15 Gen 3 - 15 Round Glock 43X/48 Magazine

S15 Gen 3 - 15-Round Steel Magazine for Glock 43X/48

The patented Shield Arms S15 Gen 3 is a flush-fitting 15-round steel magazine for Glock 43X/48, providing 50% more capacity than OEM 10-round magazines. Made in USA, lifetime warranty.
$42.00
S15 +5 Pre-Installed Magazine Extension - Black

S15 +5 Pre-Installed Magazine Extension

Shield Arms S15 Gen 3 15 round magazine with an installed Shield Arms anodized +5 magazine extension, for a total of 20 rounds.
$74.99
S15 Starter Kit - Nitrocarb

S15 Starter Kit

Complete upgrade kit: (1) S15 Gen 3 15-round magazine + (1) Standard steel mag catch. Everything needed to upgrade your Glock 43X/48 from 10 to 15 rounds. Save $10 vs buying separately. Lifetime warranty + Spring for Life guarantee. Made in USA.
$46.00 $36.00
Premium S15 Steel Mag Catch for Glock® 43X / 48 - Nitride

Premium S15 Steel Mag Catch for Glock 43X / 48

Premium hand-specific steel mag catch for Shield Arms S15 magazines. Enhanced ergonomics with extended knurling, beveled edges for smooth reloads, and increased magazine engagement. Not compatible with OEM magazines. Select left or right hand. Made in USA, lifetime warranty.
$36.99
Picture of Shield Arms Premium Magwell - Glock® 43X/48

Shield Arms Premium Magwell - Glock® 43X/48

Shield Arms Premium Magwell for Glock 43X/48. Precision CNC-machined aluminum. Enhanced reload speed for slim-frame pistols. Competition ready.
$80.00

FREE SHIPPING FOR ORDERS OVER $100!