Description
When you own a SAR9 or CM9, having a quality spare magazine on hand just makes sense, and going with the factory mag means you already know it's going to work. This is the genuine SAR USA SAR9-21, a 21-round extended magazine made by Sarsilmaz to fit the full-size SAR9 series and the CM9 pistols. No aftermarket guesswork, no fitment surprises.
The body is stainless steel with a blued, corrosion-resistant black finish that holds up to the kind of wear you'd expect from a range gun or a carry setup. Reinforced feed lips keep things rock solid even after repeated loading cycles, and the high-tensile steel wire spring paired with an anti-tilt polymer follower keeps cartridge alignment consistent from the first round to the last. The removable polymer baseplate makes cleaning and maintenance quick and painless.
One thing worth knowing: this mag is the standard magazine that ships with the SAR9 SOCOM. It fits the SAR9 Full-Size and SAR9 Compact as well, though on non-SOCOM models that don't have a magwell, you'll notice a small gap at the base where the extended floorplate protrudes. It does not affect function, just something to be aware of going in.
Whether you're stocking up for range days, building out a home defense setup, or just want a reliable backup ready to go, this magazine gives you 21 rounds of 9mm capacity in a well-built, factory-spec package. Grab a couple and you'll be set.
Key Specifications
- Manufacturer: SAR USA (Sarsilmaz)
- MPN: SAR9-21
- UPC: 850020252114
- Caliber: 9mm Luger
- Capacity: 21 Rounds
- Material: Stainless Steel Body
- Finish: Black (Corrosion-Resistant Blued)
- Follower: Anti-Tilt Polymer
- Spring: High-Tensile Steel Wire
- Baseplate: Removable Polymer
- Style: Extended
- Compatible Pistols: SAR USA SAR9 Series, SAR9 SOCOM, SAR9C, CM9
- Country of Origin: Turkey
- Magazine Length: 6.7 in
- Units per Package: 1
What’s Included
- 1x SAR USA SAR9 21-Round 9mm Steel Magazine
Frequently Asked Questions
Will this SAR9 21-round magazine fit my CM9 pistol?
Yes, this magazine is compatible with the SAR USA CM9 full-size pistol. It is also designed for the SAR9 Full-Size, SAR9 Compact, and SAR9 SOCOM. Just keep in mind that on pistols without a magwell, the extended baseplate will leave a small gap at the bottom of the grip, which is cosmetic and does not affect function.
Is this a factory magazine or an aftermarket replacement?
This is a genuine OEM magazine made by Sarsilmaz, the Turkish manufacturer behind the SAR9 platform. It is the same factory magazine that ships standard with the SAR9 SOCOM pistol. Buying factory means you get the exact same specs the gun was engineered around.
What is the magazine body made of?
The body is stainless steel with a corrosion-resistant blued black finish. The follower is an anti-tilt polymer design, the spring is high-tensile steel wire, and the baseplate is a removable polymer piece that makes field-stripping for cleaning straightforward.
Can I use this magazine for everyday carry, or is it more of a range magazine?
It works for both, though a 21-round extended magazine is more common in range and training setups, home defense configurations, or as a backup magazine. The extended length protrudes past the grip on standard SAR9 and CM9 models, which can make concealment less practical compared to a flush-fit mag.
How many magazines come in the package?
The package includes one magazine. If you want backups on hand for range sessions or training, it is worth picking up a couple at a time so you are not waiting on reorders.
Does the removable baseplate serve any practical purpose?
Yes, the removable polymer baseplate lets you fully disassemble the magazine for cleaning, inspection, and spring replacement without any tools. It is a feature you will appreciate after high-volume range use when you want to keep the internals clean and the spring in good shape.





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