For operators and serious shooters, magazine choice is a practical decision that affects weight, handling, and reliability in the field. Whether building a training rig or stocking spare mags for duty use, an aluminum replacement designed to match USGI specifications offers predictable performance without unnecessary bulk.

COLT USGI MSR is an aluminum magazine constructed specifically to be compatible with your USGI MSR. This mag is listed at $31.49 and is produced under the Colt brand, with model listed as Various. Shop this product

Aluminum construction: balance of weight and durability

One primary feature is its aluminum construction. Aluminum magazines trade the ultimate shock resistance of steel for lighter carry weight and corrosion resistance compared with some untreated steels. For patrol, range, or competition use where carrying multiple spares matters, that lighter load can improve mobility. Because this magazine is made to USGI MSR specifications, fit and feed geometry are prioritized to work reliably with standard USGI-profile bolts and feeds.

Compatibility and fit

Compatibility with USGI MSR platforms is the key selling point of the COLT USGI MSR. The magazine follows USGI external dimensions and feed angle, helping reduce the risk of stovepipes and failures caused by incorrect geometry. The listing indicates model as Various, which signals Colt supplies compatible variants — check fit on your specific rifle before committing to bulk purchases. View product details and pricing on the shop page to confirm fit for your platform. View product details and pricing

Practical use and care

Aluminum mags benefit from routine inspection: check feed lips, spring tension, and the follower for wear. Store magazines unloaded or partially loaded to preserve spring life when possible. The COLT USGI MSR’s construction makes it easy to clean—light solvent and a brush will clear debris; avoid harsh abrasives that can alter feed geometry.

For a lightweight, USGI-compatible spare at a sensible price point—$31.49—the COLT USGI MSR is a practical option for shooters who prioritize fit, function, and reduced carry weight. Check availability and purchase options on the shop page to add one to your loadout. Check current availability

People Also Ask