This magazine extension is designed for the Sig Sauer MPX magazine and can add up to 10 rounds in 9mm. These are made from high quality aluminum and hard anodized to provide an ultra durable finish. Their extensions are easy to remove and clean. Whether it is for duty, competition or recreation, this is a great addition to your MPX.

Weight: 2.50 oz.

Please NOTE:

• Modification on the magazine follower is required.
• Do not use the bottom plate on your magazine spring.
• For use with the 20 and 30rd mags only.