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Sig Sauer P320 Magazine, 9mm 30 Round Extended
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$59.99
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SKU: 8900576-798681649921
Overview
Built for the Sig Sauer P320 chambered in 9mm, this extended magazine is intended for shooters who want fewer reloads during range sessions or extended practice. Its 30-round capacity, steel body, and high-tensile spring are paired with a high-lubricity finish, rear witness holes, and a removable base plate for straightforward maintenance and round checks. The sleeved base plate adds comfort and function while keeping the magazine aligned with factory-original design expectations. It is a practical option for owners who want a larger-capacity magazine without moving away from the P320 platform.
Why Hunters Choose the Sig Sauer
30-round Capacity
Reduces reload frequency during extended
Factory-original Magazine
Designed for the Sig Sauer
Complete Steel
Body construction provides a durable
High-tensile Spring
Is specified for reliable function
Rear Witness
Holes show remaining rounds in
Key Features
- Factory original extended magazine for the Sig Sauer P320 pistol chambered in 9mm.
- 30-round capacity supports extended range sessions with fewer reloads.
- Complete steel body construction with a high-lubricity finish for reliable function.
- High-tensile spring is designed for dependable feeding and service life.
- Rear witness holes mark remaining rounds in 5-round increments.
- Removable base plate and sleeved base plate support easier maintenance and handling.
Best Used For
- Sig Sauer P320 owners wanting a factory-original extended magazine for range sessions
- Shooters who prefer fewer reloads during extended 9mm practice drills
- Users who value rear witness holes for quick round-count checks
- Owners seeking an easy-to-maintain magazine with a removable base plate
- Range shooters wanting a 30-round magazine with a sleeved base plate
Specifications
| Base Plate | Removable sleeved base plate |
|---|---|
| Blade Finish | High-lubricity finish |
| Body Material | Steel |
| Caliber | 9mm |
| Capacity | 30 rounds |
| Compatibility | Sig Sauer P320 pistol |
| Follower | Polymer |
| Maintenance | Removable base plate for easy maintenance |
| Spring | High-tensile spring |
| Witness Holes | Rear witness holes in increments of 5 |
Pros
- 30-round capacity reduces reload frequency during extended range sessions.
- Factory-original magazine designed for the Sig Sauer P320 in 9mm.
- Complete steel body construction provides a durable magazine build.
- High-tensile spring is specified for reliable function and service life.
- Rear witness holes show remaining rounds in 5-round increments.
- Removable base plate supports easier maintenance and cleaning.
Considerations & Trade-offs
- Extended 30-round capacity adds length and bulk, so it is less compact than standard-capacity magazines.
- Designed for the Sig Sauer P320 in 9mm, so compatibility is limited to that platform and chambering.
- The removable sleeved base plate is intended to improve comfort and function, but it also adds another component to the magazine assembly.
- Rear witness holes are marked in 5-round increments, so they provide only approximate round-count visibility rather than exact per-round tracking.
Suggested Comparisons
- Pistol magazines
- Extended-capacity magazines
- Range accessories
- Sig Sauer P320 accessories
Suggested Accessories
- Magazine loader
- Magazine pouch
- Cleaning kit
- Range bag
Frequently Asked Questions
Is this magazine made for the Sig Sauer P320 in 9mm?
Yes. The product data identifies it as a Sig Sauer P320 magazine chambered in 9mm.
How many rounds does it hold?
It has a 30-round capacity.
What materials or construction details are provided?
The listed construction details are a complete steel body, a durable polymer follower, and a high-tensile spring.
Does it have any features to help check remaining rounds?
Yes. It includes rear witness holes in increments of 5 to show the remaining rounds in the magazine.
Is there any information about compatibility beyond the P320?
No. The provided data only states compatibility with the Sig Sauer P320 pistol chambered in 9mm.