Glock 17/34 Magazine Extension + Spring
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Glock 17/34 Magazine Extension + Spring

(2 reviews) Write a Review
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Simple spring plunger design makes installation/removal quick, easy and tool free!


-Does not work with 10 round magazines 

-Spring included 

-Does not work with stock magazine spring

-Does not work on a Glock 19 

-Black Anodized/Cerakote 

-Made in the USA 

-Made out of 6061 Aluminum

-Cerakote adds 2-3 weeks



Spring plunger design licensed by Taran Tactical Innovations 

2 Reviews

  • JW Mag Extensions

    Posted by andrew bryant on May 20th 2019

    These extensions are pleasing in form and function. They run flawlessly! I am super-stoked on JW products and will be sending my 17 slide in after next week.

  • Magazine Extensions

    Posted by Nehemiah on Apr 1st 2019

    Bought two of these bad boys for my two spare 17 mags. They add +6 9mm to my G17 mags, for a good 23 rounds. Machining and coating is superb, no chips or scratches. It comes with the extension and a new spring, installation was as easy as remove factory base plate and swap the follower then slide the extension on until it snaps in place. Good to go so far!

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Shipping & Returns


Please ship to our address 

JagerWerks Eng 

2909 Lake St 

Kalamazoo, Mi 49048 

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

 Shipping Insurance and Signature Confirmation

When shipping slides for milling, SHIP SLIDES ONLY. Do NOT ship the lower of the firearm as we are not transferring the firearm. We only custom mill slides.

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, please Contact Us with your order number and details about the product you would like to return. We will respond quickly with instructions for how to return items from your order.