
Availability: In Stock
The Warne MESIG54BLK magazine extension for Sig P320 is a straightforward way to add capacity to your carry or duty magazine. Built from 6061-T6 aluminum with a hardcoat anodized black finish, this extension adds 5 rounds to your 9mm Luger magazines, giving you more shots on target without switching mags. If you run a P320 for concealed carry, competition, or duty work, a few extra rounds in the same footprint is always welcome.
Magazine capacity matters in real scenarios, and this extension doesn't complicate your setup—it simply bolts onto your existing P320 magazine tube. The hardcoat anodized finish resists scratches and corrosion, holding up to daily carry and rough handling. The 6061-T6 aluminum keeps weight down while delivering the durability you expect from precision-engineered components.
Whether you're running a single-stack P320 compact, full-size, or X-series variant, this Warne extension gives you a practical capacity bump without the bulk of carrying backup magazines. It's a common-sense upgrade for anyone who trusts their P320 enough to rely on it.
| Material | 6061-T6 Aluminum |
| Finish | Hardcoat Anodized Black |
| Caliber Compatibility | 9mm Luger |
| Magazine Platform | Sig P320 |
| Capacity Addition | 5 Rounds |
| Manufacturer | Warne Scope Mounts |
This extension is designed for Sig P320 magazines in 9mm Luger. Confirm your magazine platform matches before ordering.
The product adds 5 rounds of capacity. We don't have the exact length measurement, but the extension increases the physical size of the magazine tube accordingly.
Yes. The hardcoat anodized finish is engineered to resist scratches and corrosion, making it suitable for everyday carry and frequent handling.
Based on the product specifications provided, this is the extension component. Verify compatibility with your existing P320 magazines before purchase.



SKU: 115802150 • Width: 2.9in • Height: 1.5in • Depth: 12.7in • Weight: 0.13oz





Availability: In Stock
The Warne MESIG54BLK magazine extension for Sig P320 is a straightforward way to add capacity to your carry or duty magazine. Built from 6061-T6 aluminum with a hardcoat anodized black finish, this extension adds 5 rounds to your 9mm Luger magazines, giving you more shots on target without switching mags. If you run a P320 for concealed carry, competition, or duty work, a few extra rounds in the same footprint is always welcome.
Magazine capacity matters in real scenarios, and this extension doesn't complicate your setup—it simply bolts onto your existing P320 magazine tube. The hardcoat anodized finish resists scratches and corrosion, holding up to daily carry and rough handling. The 6061-T6 aluminum keeps weight down while delivering the durability you expect from precision-engineered components.
Whether you're running a single-stack P320 compact, full-size, or X-series variant, this Warne extension gives you a practical capacity bump without the bulk of carrying backup magazines. It's a common-sense upgrade for anyone who trusts their P320 enough to rely on it.
| Material | 6061-T6 Aluminum |
| Finish | Hardcoat Anodized Black |
| Caliber Compatibility | 9mm Luger |
| Magazine Platform | Sig P320 |
| Capacity Addition | 5 Rounds |
| Manufacturer | Warne Scope Mounts |
This extension is designed for Sig P320 magazines in 9mm Luger. Confirm your magazine platform matches before ordering.
The product adds 5 rounds of capacity. We don't have the exact length measurement, but the extension increases the physical size of the magazine tube accordingly.
Yes. The hardcoat anodized finish is engineered to resist scratches and corrosion, making it suitable for everyday carry and frequent handling.
Based on the product specifications provided, this is the extension component. Verify compatibility with your existing P320 magazines before purchase.
SKU: 115802150 • Width: 2.9in • Height: 1.5in • Depth: 12.7in • Weight: 0.13oz


