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The Elite Tactical Systems Group SMK-SG9-320-21 is a transparent polymer magazine engineered to handle the demands of P320 owners who want more rounds without sacrificing durability. With a 21-round capacity, it extends beyond the standard 17-round factory magazine while adding roughly half an inch to overall length, which plenty of full-size P320 users appreciate for getting a better grip.
Constructed from advanced polymer that's been engineered for impact resistance, this magazine won't crack or break when dropped, and resists heat, cold, UV exposure, and harsh chemicals. The translucent body isn't just for looks either. You can see exactly how many rounds are loaded and what type of ammunition you're running, which matters whether you're at the range or depending on your gun for more serious use. The polymer follower is injection-molded for smooth feeding, and the steel wire spring provides consistent tension across the full 21-round capacity. An ergonomically designed floor plate makes it easy to grab from mag pouches and manipulate during reloads.
This magazine works with the P320 full-size frame and is also compatible with the P250. The creep-resistant design means the feed lips and body won't spread or deform from extended storage or constant loading, so you can safely load it and forget about it without worrying about reliability degradation. The baseplate is interchangeable with other ETS 9mm double-stack magazines, and the design allows compatibility with popular magazine extensions if you want even more capacity for range days.
ETS backs this magazine with a lifetime warranty, giving you confidence that you're getting a product built to last. Many P320 owners pair these with their factory magazines to increase their round count during training or competition without the expense of factory extended mags.
This magazine is designed for full-size P320 frames and the P250. While shorter frames can accept longer magazines, you'll want to verify fit on your specific frame size before purchase. For compact or subcompact P320s, you may get magazine protrusion beyond the magwell, which changes how the gun handles during carry or concealment.
ETS polymer construction is engineered to resist cracking, UV degradation, and harsh chemicals. It won't become brittle from extended storage or temperature extremes. While metal magazines offer different advantages, these polymers have proven reliable for thousands of rounds in field use and many P320 owners prefer them for their durability and visibility.
Yes, the baseplate is compatible with Glock-style extensions due to the design of the plate itself. However, you'll want to test any combination before relying on it for critical use. Some extensions fit perfectly while others may require minor fitting.
No special break-in is needed. These magazines work out of the box. Like any magazine, running a few rounds through it to confirm reliable feeding in your specific P320 is good practice before counting on it for anything important, but the magazine arrives ready to use.
| UPC | 850016478849 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | SMK-SG9-320-21 |
| Caliber/Gauge | 9mm |
| Capacity | 21-Round |
| Color | Carbon Smoke |
| Length | 6.6000 |
| Model | |
| Product Type | Magazine |
| Quantity | 1 |
| State Restriction (CA) | NO DIRECT SHIP TO CALIFORNIA |
| State Restriction (IL) | NO SALE TO ILLINOIS PICA |
| State Restriction (OR) | NO SALE TO OREGON |
| State Restriction (RI) | NO DIRECT SHIP TO RHODE ISLAND |
| State Restriction (WA) | NO DIRECT SHIP TO WASHINGTON |
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