Rock Island 54171 1911Blued Detachable 13rd for 45 ACP Rock Island 1911 (High Capacity)

The Rock Island 54171 is a high-capacity 1911 magazine built to feed your .45 ACP pistol reliably when it counts. If you run a Rock Island Armory A-2 or other 1911 platform chambered in .45 ACP, this 13-round magazine gives you substantially more ammunition between reloads than the standard single-stack options. Whether you're setting up for home defense, competition, or the range, extra rounds mean fewer magazine changes and more time on target.

This magazine is engineered to the same tolerances and materials as original equipment—it's manufactured from steel and fitted with a polymer base plate that stands up to heavy use. The robust construction ensures it feeds without hiccups and seats positively in your firearm, critical details that separates a dependable magazine from one that leaves you second-guessing reliability.

Armscor and ACT MAG have long been trusted names in 1911 magazines, and this high-capacity variant is built to that same standard. The blued finish resists corrosion and matches the classic lines of most blued 1911 pistols. If you're looking to increase your carrying capacity or need spare magazines for duty or sport shooting, this is a genuine Rock Island offering that performs.

Key Features

• 13-round capacity for .45 ACP ammunition
• Steel magazine body for durability and reliability
• Polymer base plate reduces felt recoil and improves handling
• Engineered and manufactured to original Armscor specifications
• Blued finish matches standard 1911 pistol finishes
• Perfect fit and operation in Rock Island Armory A-2 and compatible .45 ACP 1911 models

Specifications

Frequently Asked Questions

What .45 ACP 1911 pistols does this magazine fit?

This magazine is designed for the Rock Island Armory A-2 and other .45 ACP 1911 platforms that accept full-size double-stack magazines. It's built to original Armscor specifications, so it fits and feeds correctly in firearms designed for this magazine type.

How many rounds does the Rock Island 54171 hold?

This magazine holds 13 rounds of .45 ACP ammunition, significantly more than standard single-stack 1911 magazines, giving you greater firepower between reloads.

Is this a genuine Rock Island magazine or a aftermarket product?

Yes, this is a genuine Rock Island Armory magazine manufactured by Armscor to the same tolerances and materials as original equipment magazines. It uses the same steel and polymer construction as factory Rock Island mags.

Will this magazine fit my single-stack 1911?

No. This is a double-stack, high-capacity magazine designed for full-size 1911 platforms that support this profile. Check your pistol's manual or contact the manufacturer if you're unsure whether your 1911 is compatible with double-stack magazines.