Product Description
Upgrade your FN Five-seveN Gen1 magazine with the CMMG 57AFD1E 10-round magazine extension kit, designed for fast installation without permanently altering your factory magazine. Built to match the magazine’s contour, this extension kit includes a corrosion-resistant chrome silicon spring that is salt water-resistant and engineered to help maintain reliable feeding and long-term performance.
Product Highlights
- Compatible with FN Gen1 Five-seveN factory magazines for 5.7x28mm pistols
- Quick install—replaces the floorplate without permanent magazine modification
- Durable lightweight polymer extension body with black finish
- Corrosion-resistant chrome silicon spring is salt water-resistant and resists taking a set
- Designed to match the contour of the Five-seveN magazine for a clean, factory-like fit
Specs
- Brand Name: CMMG
- Manufacturer Part Number: 57AFD1E
- UPC: 852005002028
- Product Type: Magazine extension kit
- Caliber Compatibility: 5.7x28mm
- Magazine Compatibility: FN Five-seveN Gen1 magazines
- Capacity: 10-round magazine extension
- Material: Polymer (extension)
- Finish/Color: Black
- Spring Material: Chrome silicon (salt water-resistant)
- Package Contents: Magazine extension and spring
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