The CMMG 10-Round Extension for FN 5.7 20-Round Magazines offers a simple yet effective way to increase your firearm's capacity. This extension is designed to seamlessly fit onto existing 20-round FN 5.7 magazines, providing an additional 10 rounds of ammunition. Engineered for reliability and durability, this extension maintains the same feed geometry as the original magazine to ensure consistent performance. The extension is easy to install and remove, allowing for quick configuration changes based on your shooting needs. It's an ideal accessory for competition shooters, tactical enthusiasts, and those looking to maximize their FN 5.7's potential.

Features and Specifications:

• Compatible with FN 5.7 20-round magazines

• Adds 10 rounds of capacity

• Material: Likely high-impact polymer

• Easy installation and removal

• Maintains original magazine feed geometry

• Does not interfere with magazine well fit

• Made in the USA