Description
This is the genuine factory rotary magazine for Ruger American short-action rifles, engineered to pair perfectly with your rifle's magazine well. The magazine holds 5 rounds and is molded from durable black polymer with a flush-fit profile that keeps things clean and snag-free when you're moving through the field or transitioning between positions.
The rotary design feeds reliably across multiple calibers, making it a versatile choice whether you're running .223 Remington, 5.56 NATO, .204 Ruger, or .300 Blackout ammunition. The precision-molded construction delivers a wobble-free fit with reinforced feed lips that guide rounds smoothly into the chamber. A steel spring and polymer follower work together to maintain consistent feeding from the first shot to the last.
Ruger American Rotary Magazine Build and Fit
This magazine is made in the USA and features the minimal, purposeful design Ruger built the American around. It integrates seamlessly with stocks equipped with removable short-action magazine wells, and the polymer construction keeps weight down without sacrificing durability. The rotary mechanism itself is straightforward and doesn't require special handling or maintenance beyond normal care.
Multi-Caliber Performance
One advantage of this magazine is its cross-caliber compatibility within the Ruger American platform. Many owners use the same magazines between their .223 and .300 Blackout rifles without issue, which keeps costs down when building or expanding your rifle collection. The feed geometry accommodates the different cartridge dimensions across these calibers.
Key Specifications
- Manufacturer: Sturm, Ruger & Co., Inc.
- Model Number: 90440
- UPC: 736676904402
- Caliber/Gauge: .223 REM / 5.56 NATO / .204 Ruger / .300 Blackout
- Capacity: 5 rounds
- Material: Polymer with steel spring
- Color: Black
- Fits: Ruger American Rifle (short-action magazine wells)
- Magazine Type: Detachable rotary
- Made in: USA
- Package Contents: 1 magazine
What’s Included
- 1 Ruger American 5-round rotary magazine
Frequently Asked Questions
Will this Ruger American rotary magazine work in both .223 and .300 Blackout rifles?
Yes, this magazine is designed for multiple calibers and functions in both .223 Rem/5.56 NATO and .300 Blackout versions of the Ruger American rifle. The rotary design accommodates the different cartridge dimensions without issue. Just keep in mind that proper loading technique helps with reliability, so press rounds down into the magazine rather than sliding them in from the side.
What makes the rotary design different from standard detachable magazines?
Rotary magazines have a spinning follower that lines up each round as you rotate the mag spring. This compact design lets you fit more rounds in a smaller footprint and integrates flush with the rifle stock. The Ruger American rotary is engineered specifically for this rifle's magazine well and provides consistent feeding when loaded properly.
How do I load this magazine correctly?
Press cartridges straight down into the magazine from the top, rather than backing them in from the side. This ensures the rotary spring stays properly tensioned and feeds reliably. The manual recommends this approach, and it makes a real difference in consistent performance during shooting.
Is this a factory-original Ruger magazine?
Yes, this is a genuine factory Ruger accessory manufactured to original specifications and tolerances. It's identical to the magazine that comes with new Ruger American short-action rifles in these calibers, making it a reliable spare or replacement.






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