Armscor builds this factory magazine (part no. OEMP164015B) for the Rock Island Armory 1911 A2, a double-stack pistol chambered in .40 S&W and 10mm Auto, holding 16 rounds in a blued steel body. Manufactured to Armscor’s own specifications and referenced internally as the R magazine, it gives 1911 A2 owners a genuine high-capacity spare without relying on a single magazine for the range or for duty use. Because the .40 S&W and 10mm Auto share the same case head and magazine geometry, one magazine design serves both chamberings. For Rock Island Armory 1911 A2 owners, this handgun magazine is a dependable factory-correct spare.

Key Specifications

• Chambered in .40 S&W and 10mm Auto, sharing one magazine design.
• Holds 16 rounds, a high-capacity double-stack option.
• Fits the Rock Island Armory 1911 A2 as a factory-spec magazine.
• Finished in blued steel for a traditional, corrosion-resistant body.

Frequently Asked Questions

Does one magazine work for both .40 S&W and 10mm Auto? Yes, both cartridges share the same case head dimensions and run through this same magazine.

Is this a genuine Rock Island Armory factory magazine? Yes, manufactured by Armscor to 1911 A2 specifications.

Buy the Rock Island Armory 1911 16-Round .40 S&W/10mm Magazine

A high-capacity factory spare keeps a 1911 A2 topped off for the range or duty use. Order it from our Lubbock, Texas gun shop for fast, insured shipping.