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If you run a Sig Sauer 1911 in 10mm, this is the magazine you want backing it up. The MAG-1911-10-8 is a factory replacement straight from Sig, built to the exact same specs and tolerances as the magazine that came with your pistol. That matters a lot with 10mm, a cartridge that runs hotter and hits harder than most semi-auto rounds. You want a mag designed specifically for it, not a .45 ACP body that someone adapted.
The body is precision-machined stainless steel, which holds up well against corrosion and general abuse. Inside, a stainless steel follower works with a high-tensile steel spring to keep feeding smooth and consistent round after round. The feed lips are machined for a tight, wobble-free fit, which helps prevent feeding issues and keeps the magazine seated securely in the grip.
Numbered witness holes run along the side so you can get a quick round count without dumping the mag. The baseplate is polymer and removable, making field cleaning straightforward. This is a single-stack design, which is standard for 1911 platform pistols, giving you 8 rounds of 10mm Auto plus one in the chamber for a 9-round total carry capacity.
Compatibility covers Sig Sauer 1911 full-size and carry-frame models, and because Sig builds these to standard 1911 specifications, they also work well in other 1911-pattern pistols chambered in 10mm. If you're looking to stock up on spares or replace a magazine that's seen better days, this is the straightforward factory choice.
Because Sig builds these to standard 1911 dimensions and specs, they tend to work well in other 1911-pattern pistols chambered in 10mm, including models from other manufacturers. That said, fit and function can vary slightly between brands, so it's worth testing before relying on it for anything serious. When in doubt, check with your pistol's manufacturer.
It's not recommended. While the external dimensions are similar, 10mm-specific magazines have a narrower internal width designed to properly headspace and feed the 10mm round. Using a .45 ACP magazine in a 10mm pistol can lead to feeding inconsistencies, especially given how fast the 10mm operates. Stick with a magazine rated for 10mm Auto.
The magazine holds 8 rounds of 10mm Auto. With a round already chambered, you're looking at a total of 9 rounds. That's standard for a single-stack full-size 1911 in 10mm.
Yes, the polymer baseplate is removable, which makes disassembly for routine cleaning much easier. Regular cleaning of the magazine body, follower, and spring is a good habit, especially with a hard-hitting cartridge like 10mm that can leave more residue over extended range sessions.
The numbered witness holes run along the side of the magazine body and let you see at a glance how many rounds are left without dropping the mag. It's a small but genuinely useful feature when you're mid-session at the range and want a quick round count without interrupting your flow.
This is a factory Sig Sauer magazine made to Sig's own specifications and tolerances. Sig does source some of their 1911 magazines from contracted manufacturers, but they are built to Sig's exact standards, which is why they carry the Sig name and part number. If your pistol came with a Sig 1911 10mm magazine, this is effectively the same product.
| UPC | 798681565016 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | MAG-1911-10-8 |
| Brand Fit | Sig Sauer |
| Caliber/Gauge | 10mm |
| Capacity | 8 |
| Length | 8.5 |
| Model | |
| Model Fit | 1911 |
| Package Height | 1.8 |
| Package Width | 4.1 |
| Product Type | Accessory-Magazines |
| Quantity | 1 |
| Shipping Weight | 0.27 |
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