Description
This factory Sig magazine is built to the same specs and tolerances as the original mag that came with your 1911. The 8-round capacity gives you plenty of firepower for the range or carry, and the stainless steel construction resists corrosion through years of use and storage.
Stainless Steel Build and Durability
Precision-machined stainless steel tube paired with a removable steel baseplate makes this mag durable and easy to maintain. The polymer baseplate is extended slightly for better insertion and extraction, even if you run a magwell. If you drop it on the ground, that soft polymer takes the impact instead of your mag denting up. Side-facing witness holes numbered for quick round counts let you know your ammo status at a glance without opening the gun.
Tight Fit Guaranteed
Manufactured with factory tolerances, this Sig magazine feeds consistently and cycles smoothly in Sig Sauer full-size and carry 1911 models. The stainless steel follower and high-tensile wire spring work together to align cartridges properly and deliver reliable feeding shot after shot. The magazine comes with an exchangeable floor plate, so you can swap it out depending on your carry setup or shooting preference.
Built for Any 1911 Shooter
Whether you're running it at the range for practice or carrying it as a backup mag, factory Sig magazines deliver the performance you expect from genuine OEM parts. Keep a few on hand so you spend more time shooting and less time reloading.
Key Specifications
- Manufacturer: Sig Sauer
- Model: 1911
- Caliber: .45 ACP
- Capacity: 8 rounds
- Material: Stainless steel
- Follower: Stainless steel
- Type: Detachable with exchangeable floor plate
- Fits: Sig Sauer 1911 full-size and carry models
- Length: 8.4 inches
- Features: Numbered witness holes, removable baseplate, polymer extended base
- Part Number: MAG-1911-45-8
- UPC: 798681408979
What’s Included
- 1 x Sig Sauer 1911 8-round .45 ACP magazine
Frequently Asked Questions
Will this Sig Sauer 1911 magazine work in other 1911 pistols?
This magazine is designed specifically as a factory original for Sig Sauer 1911 full-size and carry models. However, many 1911 enthusiasts report it works well in other Government and Commander-sized 1911s from different manufacturers, though compatibility can vary. For best results, confirm compatibility with your specific 1911 model.
What's the difference between the exchangeable floor plate and other magazines?
The exchangeable floor plate lets you swap the baseplate to match different carry setups or preferences. You can use the extended polymer baseplate for easier handling or swap it for a different style. This gives you flexibility without buying multiple magazines.
How do I clean and maintain this magazine?
The removable steel baseplate makes cleaning simple. Unscrew the baseplate and slide out the spring and follower. Wipe everything down and reassemble. The stainless steel resists rust, but a light oil on the spring and any exposed metal parts after cleaning keeps it in top shape.
Is 8 rounds the right capacity for my 1911?
Eight rounds is the standard capacity for full-size and carry 1911 models in .45 ACP. Sig also makes 7-round magazines for their compact and ultra-compact models, so double-check your specific 1911 size to make sure the 8-rounder is what you need.





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