**MAGAZINE NOT INCLUDED**

Features:
• 21 rounds with the full size 9mm 17rd mag and the factory spring
• 22 rounds with the full size 9mm 17rd mag and the extra power
• 17 rounds with the full size 9mm 12rd mag and the factory spring
• 17 rounds with the full size 9mm 12rd mag and the extra power spring

Compatibility:
• FN 509 17rd and 12rd magazines
• FN 509 LS Edge
• FNS 9mm and .40cal magazines
• Does not work on FN 509 Midsize 15rd mags

Product Overview:
Springer Precision has designed and created the 140mm magazine extension for the FN 509 using precise CNC machining methods that offer a lifetime of durability. The product is hard anodized and offered in 3 different colors. The unique locking mechanism allows for a very solid attachment with a simple backing out of the discrete set screw. They are specifically designed to work with our magwells and fit the USPSA 140mm magazine gauge.

Custom engraved and custom colors are non-returnable

Due to design variations, Springer Precision cannot guarantee compatibility with any other manufacturer’s aftermarket magwell, unless otherwise specified. 

Please note: It's crucial to test and verify compatibility before using in competition settings, especially with 140mm/170mm magazine configurations. Variances can occur between mass-produced magazines, particularly in the magazine lips connecting with the extension/basepad.