
Availability: In Stock
If you run a Sig P320 and want serious magazine capacity without breaking the bank, the ProMag SIGA9 32-round 9mm magazine is a no-nonsense option. This is the kind of high-capacity steel magazine that makes sense for range days, competition, or anyone who just prefers to reload less often. ProMag builds these in the USA with attention to the details that matter: heat-treated chrome silicon wire springs and a straightforward assembly process designed to catch problems before they reach you.
The SIGA9 is built on ProMag's bread-and-butter formula—blued steel construction that's designed to handle the workload. The 32-round capacity means more time downrange and fewer magazine changes, whether you're working through a training session or stacking rounds at the range. The precision-wound springs use heat-treated materials to maintain reliable feeding over time, and the whole unit is assembled and manufactured in the USA.
This is straightforward gear: you get durable steel, US manufacturing, and a lifetime guarantee against defects. No flash, no marketing, just a magazine built to feed your P320 reliably, shift after shift. If you need more rounds between reloads and want American-made construction you can count on, this is worth a hard look.
| Capacity | 32 rounds |
| Caliber | 9mm |
| Firearm Compatibility | Sig P320 |
| Material | Blued steel with heat-treated chrome silicon wire spring |
| Manufacture Location | USA |
| Warranty | Lifetime against manufacturer defects |
Yes. The ProMag SIGA9 is designed specifically for the Sig P320 in 9mm.
Yes. ProMag manufactures and assembles the SIGA9 in the USA, and stands behind it with a lifetime warranty against manufacturer defects.
The magazine uses a precision-wound spring made from heat-treated chrome silicon wire, designed to maintain reliable feeding over extended use.
The SIGA9 holds 32 rounds of 9mm ammunition.



SKU: 115708127 • Width: 1.2in • Height: 0.4in • Depth: 9.2in • Weight: 0.45oz
Availability: In Stock
If you run a Sig P320 and want serious magazine capacity without breaking the bank, the ProMag SIGA9 32-round 9mm magazine is a no-nonsense option. This is the kind of high-capacity steel magazine that makes sense for range days, competition, or anyone who just prefers to reload less often. ProMag builds these in the USA with attention to the details that matter: heat-treated chrome silicon wire springs and a straightforward assembly process designed to catch problems before they reach you.
The SIGA9 is built on ProMag's bread-and-butter formula—blued steel construction that's designed to handle the workload. The 32-round capacity means more time downrange and fewer magazine changes, whether you're working through a training session or stacking rounds at the range. The precision-wound springs use heat-treated materials to maintain reliable feeding over time, and the whole unit is assembled and manufactured in the USA.
This is straightforward gear: you get durable steel, US manufacturing, and a lifetime guarantee against defects. No flash, no marketing, just a magazine built to feed your P320 reliably, shift after shift. If you need more rounds between reloads and want American-made construction you can count on, this is worth a hard look.
| Capacity | 32 rounds |
| Caliber | 9mm |
| Firearm Compatibility | Sig P320 |
| Material | Blued steel with heat-treated chrome silicon wire spring |
| Manufacture Location | USA |
| Warranty | Lifetime against manufacturer defects |
Yes. The ProMag SIGA9 is designed specifically for the Sig P320 in 9mm.
Yes. ProMag manufactures and assembles the SIGA9 in the USA, and stands behind it with a lifetime warranty against manufacturer defects.
The magazine uses a precision-wound spring made from heat-treated chrome silicon wire, designed to maintain reliable feeding over extended use.
The SIGA9 holds 32 rounds of 9mm ammunition.
SKU: 115708127 • Width: 1.2in • Height: 0.4in • Depth: 9.2in • Weight: 0.45oz


