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The Magnum Research 1911 U is a compact, Officer-sized .45 ACP pistol with a shortened grip frame, and that means it takes its own specific magazine. This is the factory-spec replacement, part number MAG1911456, built to fit the 1911 U platform and nothing else. It is not cross-compatible with the full-size 1911 G or the Commander-sized 1911 C models, so getting the right one matters.
The magazine body is steel construction with a black finish, which holds up well to the wear that comes with regular range use and carry. The detachable single-stack design holds six rounds of .45 ACP and sits flush with the grip frame, keeping the profile clean and draw snag-free. The beveled magazine well on the 1911 U pairs well with this mag, making reloads feel smooth even under pressure.
The 1911 U was designed from the ground up as a carry-oriented compact, chambered in .45 ACP with a 3-inch bull barrel and a lightweight aluminum alloy frame. At only 25.8 oz fully loaded, it punches above its weight class for a gun this small. Having a backup magazine ready to go makes practical sense for both range sessions and everyday carry situations.
Whether you lost the original, need a dedicated spare, or just want to have extra capacity available without digging through your range bag, this is a straightforward pick-up for any 1911 U owner. It ships as a single magazine.
No. The MAG1911456 is designed exclusively for the Magnum Research 1911 U, which is the compact Undercover model with a shortened Officer-sized grip frame. It will not properly fit the full-size 1911 G or the mid-size 1911 C. Always verify your exact model before ordering a replacement magazine.
This is listed as the factory replacement magazine for the 1911 U, sold under the Magnum Research part number MAG1911456. Some retailer information notes it is manufactured in Italy, which is common for quality 1911 magazines used by a number of major handgun brands. Either way, it is the correct OEM-spec magazine for the platform.
It holds 6 rounds of .45 ACP in a single-stack configuration. The 1911 U ships from the factory with two of these magazines, and the 6-round capacity is a result of the pistol's shortened Officer-sized grip frame. It seats flush with the grip for a clean carry profile.
The 1911 U was designed with a throated and ramped bushingless bull barrel intended to feed a variety of bullet profiles, and the magazine is spec'd to match that system. The platform has been tested with standard FMJ practice loads as well as common defensive hollow point configurations. As with any compact 1911, it is always a good idea to run a few magazines of your carry ammo through the gun to confirm reliable feeding.
The magazine features a black finish over a steel body, which provides solid corrosion resistance and durability for everyday use. Steel magazines generally handle the repeated loading, unloading, and range abuse that comes with regular use without issue. Keeping the magazine clean and lightly lubricated will extend its service life further.
| UPC | 761226086918 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | MAG1911456 |
| Brand Fit | Magnum Research |
| Caliber/Gauge | .45 ACP |
| Capacity | 6 |
| Model | |
| Model Fit | 1911 U |
| Package Height | 2.0 |
| Package Width | 3.0 |
| Product Type | Accessory-Magazines |
| Shipping Weight | 0.14 |
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