Description
This polymer magazine sleeve is designed for FN 509 Midsize (509M) magazines to protect the magazine body and streamline handling for loading, carrying, and storage. The black finish provides a discreet, low-profile appearance while helping to reduce cosmetic wear and snagging. Sized to fit FN Midsize magazines, the sleeve maintains a slim profile for easy seating in pouches or pockets during range sessions, training, or everyday carry.
Key Specifications
- The model is listed as the Mag Sleeve.
- The sleeve is designed to fit 509M (FN 509 Midsize) magazines.
- Brand fit is specified as FN.
- The sleeve is made from polymer.
- The exterior finish is black.
- The listed caliber/gauge is 9mm.
- Compatible magazine styling is FN 509 Midsize magazines.
- The product type is Accessory – Magazines.
Compact and unobtrusive, this FN 509M magazine sleeve offers practical protection and handling improvements without adding bulk. Its polymer construction and black finish make it suitable for regular use at the range, during training, or as part of a streamlined everyday carry setup.





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