SIG SAUER P320 M17/M18 MAGAZINE - 9MM - 10 ROUND CAPACITY - 21 ROUND BODY - BLACK
Sig Sauer
$54.69 - $60.69
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Sig Sauer
SIG SAUER P320 M17/M18 MAGAZINE - 9MM - 10 ROUND CAPACITY - 21 ROUND BODY - BLACK
The SIG SAUER P320 M17/M18 Magazine delivers the same exceptional reliability and precision engineering found in the U.S. Military's adopted sidearm, now in a California-compliant 10-round configuration housed in a full-size 21-round body.
- California-compliant 10-round capacity in a standard 21-round magazine body
- Designed specifically for SIG SAUER P320 M17 and M18 pistols
- Chambered in 9mm Luger for wide ammunition compatibility and availability
- Durable polymer body with a corrosion-resistant steel feed lip insert
- OEM SIG SAUER quality ensures a precise, drop-free fit every time
- High-visibility follower for easy round-count monitoring at a glance
Who This Is For
This magazine is ideal for California-based P320 M17 and M18 owners who demand genuine SIG SAUER reliability without sacrificing the ergonomic feel of a full-size grip frame. Whether you carry daily, shoot competitively, or train at the range, this compliant magazine lets you run your pistol exactly as it was designed — with confidence in every round.
Specifications
| Brand | SIG SAUER |
|---|---|
| Model | P320 M17 / M18 Magazine |
| Caliber | 9mm Luger |
| Capacity (Legal) | 10 Rounds |
| Magazine Body Size | 21-Round Body |
| Finish | Black |
| Body Material | Polymer with Steel Feed Lips |
| Compatible Pistols | SIG SAUER P320 M17, P320 M18 |
| Compliance | California-Compliant (10-Round Limited) |
| OEM / Aftermarket | OEM (SIG SAUER Factory) |
Frequently Asked Questions
Will this magazine work in all P320 variants, or only the M17 and M18?
This magazine is specifically designed and optimized for the P320 M17 and M18 models, which feature a slightly different grip module than standard P320 variants. While it may function in other full-size P320 frames, SIG SAUER recommends using model-specific magazines to ensure the best fit, feed reliability, and drop-free release.
Why does a 10-round magazine have a 21-round body?
California law restricts magazine capacity to 10 rounds. To remain compliant while preserving the full-size grip feel of the M17/M18 platform, this magazine uses the standard 21-round body but is factory-blocked to hold only 10 rounds. This allows shooters to maintain proper ergonomics and the pistol's intended handling characteristics without legal concerns.
Can I legally purchase and use this magazine in California?
Yes. This magazine is specifically configured for California compliance, with a permanent or semi-permanent block limiting capacity to 10 rounds. It is legal to purchase, own, and use in California. However, laws can change — always verify current state and local regulations before purchasing any firearm accessory. Goodland Guns, located in California, carries this magazine specifically to serve compliant California shooters.
- Capacity:
- 10/21 Round
- Caliber:
- 9mm
- Follower Color:
- Black
- Type:
- Pistol Magazine
- Color:
- Black
- CA Compliant:
- Yes
- Material:
- Steel
- Platform:
- P320
