Rock Island 54172 1911Blued Detachable 7rd for 45 ACP Rock Island 1911 CS

The Rock Island 54172 is a factory-spec 7-round detachable magazine built for full-size 1911 pistols chambered in .45 ACP—specifically designed to work with Rock Island 1911 CS models. If you run a Rock Island 1911, this is the magazine you need: it's manufactured to the same tolerances and specifications as the original equipment, so you get the reliable fit and flawless feeding you expect from a quality defensive or target 1911 without any guesswork or tuning.

Built with a steel magazine body and polymer base plate, this magazine combines proven durability with smooth operation. Whether you're training at the range, carrying for personal protection, or building a spare magazine setup for your 1911, you want magazines you can absolutely depend on. Rock Island factory magazines are engineered to feed and function reliably cycle after cycle, so you can focus on your shooting instead of worrying about equipment.

At 7 rounds, this magazine holds a standard full-size 1911 load and seats cleanly in the magazine well. The durable construction means it will handle regular use, reloading, and storage without degradation—essential for any .45 ACP 1911 owner who treats their gear seriously.

Key Features

• Steel magazine body for durability and longevity
• Polymer base plate for smooth removal and handling
• Manufactured to factory Armscor/Rock Island specifications and tolerances
• Reliable fit and operation in Rock Island 1911 CS full-size models
• 7-round capacity for .45 ACP ammunition

Specifications

Frequently Asked Questions

Will this magazine work with my Rock Island 1911 CS?

Yes. This magazine is manufactured to factory Rock Island specifications and is designed specifically for Rock Island 1911 CS full-size models chambered in .45 ACP. It should feed and function reliably in your pistol.

What's the capacity of this magazine?

This magazine holds 7 rounds of .45 ACP ammunition, which is the standard capacity for a full-size 1911 magazine.

What materials is this magazine made from?

The magazine features a steel body for strength and durability, paired with a polymer base plate for smooth handling and removal.

Can I use this magazine in other 1911 models?

This magazine is built to Rock Island specifications. While some magazines may work across certain 1911 models, compatibility is not guaranteed outside Rock Island pistols. For best results, use it in the Rock Island 1911 CS it was designed for.