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Warne SIG SAUER P320 9mm Magazine Extension +5 Rounds Black
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$19.99
List Price: $39.99
You Save: $20.00 (50%)
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SKU: WX2*0743468
Overview
This magazine extension is designed for SIG SAUER P320 owners who want to add capacity while keeping reloads straightforward. It replaces the factory baseplate and adds 5 rounds, making it a practical option for range use and competition setups where faster magazine handling matters. The anodized aluminum construction and ergonomic shape are intended to improve grip and insertion or removal, while the included new spring supports the conversion. Magazine not included, and the extension is stated to meet USPSA 141.25mm legal length.
Why Hunters Choose the Warne
Adds 5
Rounds of capacity to SIG
Replaces Existing
Baseplate for a direct magazine
Anodized Aluminum
Construction
Ergonomic Shape
Supports easier insertion and removal
Includes Extension
New spring
Key Features
- Replaces your magazine’s existing baseplate for the SIG SAUER P320
- Adds 5 rounds of capacity to a factory P320 magazine
- Made from anodized aluminum
- Ergonomic shape supports easier insertion and removal
- Includes the extension and a new spring
- Magazine not included
Best Used For
- P320 owners wanting extra capacity from a factory magazine without changing platforms
- USPSA competitors needing a legal-length magazine extension for match use
- Shooters who want easier magazine insertion and removal during fast reloads
- Users looking for an extension kit that includes the extension and new spring
- Hunters or range shooters who prefer a more comfortable magazine baseplate shape
Specifications
| Caliber | 9mm |
|---|---|
| Capacity Increase | +5 rounds |
| Color | Black |
| Designed And Made In Usa | Yes |
| Includes | Extension and new spring |
| Legal Length | USPSA 141.25mm legal length |
| Magazine Compatibility | SIG SAUER P320 factory magazine |
| Magazine Included | No |
| Material | anodized aluminum |
Pros
- Adds 5 rounds of capacity to SIG SAUER P320 factory magazines
- Replaces the existing baseplate for a direct magazine upgrade
- Anodized aluminum construction
- Ergonomic shape supports easier insertion and removal
- Includes the extension and new spring
- Meets USPSA 141.25mm legal length
Considerations & Trade-offs
- This is an extension kit only; the magazine is not included, so it requires an existing SIG SAUER P320 factory magazine.
- It adds capacity by replacing the magazine baseplate, which changes the magazine’s original configuration rather than providing a complete magazine.
- The extension is described as meeting USPSA 141.25mm legal length, so it is intended for that size constraint rather than a universal fit across all setups.
- Includes a new spring, but installation still depends on compatibility with your existing P320 factory magazine.
Suggested Comparisons
- Pistol magazine extensions
- SIG SAUER P320 magazine accessories
- Competition shooting magazine upgrades
- Handgun spare magazines
Suggested Accessories
- Magazine loader
- Pistol magazine pouch
- Cleaning kit
- Spare magazine spring
Frequently Asked Questions
What does this magazine extension fit?
It fits your existing SIG SAUER P320 factory magazine.
How much capacity does it add?
It provides an extra 5 rounds of capacity.
Does this come with a magazine?
No. The product note says magazine not included.
What is included in the kit?
The long description says it includes the extension and a new spring.
What material is the extension made from?
It is made from anodized aluminum.