FN 20100356 Mag Sleeve509 Midsize 9mm Luger 24rd Magazine

The FN 20100356 Mag Sleeve for the FN 509 Midsize is a straightforward accessory designed to improve grip and control on your 9mm magazines. If you run FN's 509 Midsize platform and want a way to manage your 24-round magazines more effectively during reloads or administrative handling, this sleeve adds texture and substance to the magazine body. It's the kind of practical upgrade that makes a noticeable difference when you're running drills or working through high-round-count practice sessions.

Magazine sleeves serve a dual purpose: they protect the finish of your magazine and give your support hand something more substantial to grab during the reload sequence. For shooters who log serious range time or train regularly with their 509 Midsize, small details like this add up to smoother, faster handling. The sleeve is a no-fuss addition that requires no tools or permanent modifications.

Whether you're setting up your first 509 Midsize or rounding out your spare magazine rotation, having sleeves on your carry and training magazines is solid practice. FN's 509 platform has a genuine following among serious shooters, and this accessory keeps your setup running lean and functional.

Key Features

• Designed specifically for FN 509 Midsize 9mm magazines
• Fits 24-round magazine capacity
• Improves grip and control during reloads
• Protects magazine finish

Frequently Asked Questions

Will this magazine sleeve fit my FN 509 Midsize?

Yes—this sleeve is engineered for the FN 509 Midsize platform and the 24-round 9mm Luger magazine configuration.

What's the benefit of a magazine sleeve?

A sleeve adds grip texture and bulk to your magazine, making reloads smoother and faster. It also shields the magazine body from wear and dings.

Do I need any tools to install it?

No. Magazine sleeves are a slip-on accessory that requires no disassembly or special installation.