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The Mec-Gar MGCG4510B is an extended-capacity magazine designed specifically for full-size 1911 Government model pistols chambered in .45 ACP. It's built to work right out of the box and hold up through range sessions and regular use without the fuss.
Construction and Durability
This magazine starts with a heat-treated carbon steel tube that won't deform or wear thin the way cheaper steel can. The blued finish keeps corrosion at bay while giving your gun that classic look. Inside, you get a higher-tensile music wire spring paired with a steel follower, and the butt-plate is welded in place so nothing comes loose during use. These materials work together to give you consistent feeding every single time you load it up.
What to Expect with an Extended Magazine
Because this is a 10-round extended capacity model, it sticks out past the bottom of your magazine well. That's not a drawback, it's just how extended mags work. You get more ammo between reloads, and many prefer the extra grip real estate it gives you. The magazine is engineered with precision tolerances to fit smoothly into the magazine well, feed reliably, and drop free when you need it to.
Why Mec-Gar Stands Out
Mec-Gar has been making magazines for over 50 years and supplies OEM mags to major manufacturers and militaries worldwide. They're known for making magazines that work in a variety of 1911s without issues. Real users report smooth feeding, no first-round failures, and magazines that keep functioning after hundreds of rounds. The fit and finish are solid, and the blued steel looks sharp on any 1911.
Yes, the MGCG4510B is engineered specifically for full-size 1911 Government model pistols chambered in .45 ACP. It's designed to fit smoothly, feed reliably, and drop free. Mec-Gar magazines are known for working across different 1911 manufacturers without fitment issues.
Because this is a 10-round extended magazine, it holds more rounds than the standard 7 or 8-round versions, so it naturally extends past the magazine well. This gives you extra ammo capacity and additional grip support, which many shooters prefer. It's not a defect; it's by design.
Mec-Gar magazines are built tough with heat-treated steel, welded components, and quality springs. Users report reliable performance through hundreds of rounds without feeding issues or loss of function. The blued finish helps resist corrosion, and the durable construction means these mags hold up to regular range use and storage.
This standard model comes with the magazine as described, but some Mec-Gar 1911 models include numbered witness holes for quick round counts. Check the product images or specifications to see if your version includes them.
| UPC | 765595112803 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | MGCG4510B |
| Brand Fit | Colt |
| Caliber/Gauge | .45 ACP |
| Capacity | 10 |
| Color | Blue |
| Length | 9.6500 |
| Model | |
| Model Fit | 1911 Government |
| Product Type | Magazine |
| Shipping Weight | 0.2 |
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