This is the Shield Arms magazine extension for the Glock 19/23. This extension adds 4 rounds to Glock 23 magazines and 5 rounds Glock 19 magazines. 

Made from hard adonized billet aluminum, this extension brings increased capacity and durability to your Glock pistol. Please note you will need a Glock magazine tool or similar tool to remove the factory Glock baseplate.

If you’re shopping for a magazine extension, it doesn’t get much better than this. Try it yourself – pick one up today!

Compatible:

• Glock 19 and Glock 23 factory magazines, all Generations

Not Compatible:

• Glock 17, 19X and other Glock pistol magazines
• 10-round or “blocked” Glock factory magazines
• Aftermarket Glock magazines

Contents Include:

• Shield Arms magazine extension
• Replacement spring – maintains same spring tension

Manufactured by Shield Arms in the USA.