Description
The Ruger 77/17 magazine is a genuine factory rotary design built to the same exacting specifications as the original equipment that came with your rifle. If you've been running the same mag for years or need a spare for quick reloads between range sessions and hunting trips, this is the dependable choice that Ruger shooters know works.
Built for the 77/17 .17 WSM Platform
This 6-round rotary magazine fits perfectly with any Ruger 77/17 rifle chambered in .17 Winchester Super Magnum. The flush-mount design sits cleanly at the rifle's balance point without awkward protrusions, keeping your gun handling smooth and balanced. The rotating cartridge design keeps each round in its own channel, which means you get consistent feeding without the rim overlap that can cause jams in conventional magazines.
Solid Construction, Light Weight
The polymer body is reinforced with fiberglass for durability where it matters, and the steel feed lips are sized and hardened specifically for .17 WSM cartridges. Inside, a heat-treated spring wire ensures consistent pressure round after round. The pivoting locking lug engages your rifle's magazine well with a solid click, giving you that satisfying lockup feeling when you seat it, and it drops free with a simple button press when you're ready for a reload.
Why You Want Extras
Most range days go smoother with a couple of loaded magazines on hand. No fumbling with individual tiny rounds between strings of fire, no waiting around while you hand-load. At the bench, having multiple mags loaded and ready means you can shoot longer and rest your hands. This is an official Ruger factory magazine made right here in the USA, so you know it'll work with your rifle the same way the one that came with it does.
Key Specifications
- Manufacturer: Sturm, Ruger & Co.
- Model Number: 90521
- UPC: 736676905218
- Caliber: .17 Winchester Super Magnum (.17 WSM)
- Capacity: 6 rounds
- Rifle Fit: Ruger 77/17
- Magazine Type: Rotary (detachable)
- Body Material: Fiberglass-reinforced polymer
- Feed Lips: Steel-reinforced
- Spring: Heat-treated internal spring wire
- Color: Matte black
- Country of Origin: USA
- Length: 8.00 inches
- Width: 3.25 inches
What’s Included
- Ruger 77/17 .17 WSM 6-round rotary magazine
Frequently Asked Questions
Will this Ruger 77/17 magazine work with other .17 caliber rifles?
No, this magazine is specific to the Ruger 77/17 chambered in .17 WSM. It won't work with .17 HMR rifles or other 77 series models. The .17 WSM and .17 HMR use different dimensions and feed systems, so magazines between them are not interchangeable.
How many rounds does it hold and what type of feeding system does it use?
This magazine holds 6 rounds of .17 WSM ammunition using Ruger's patented rotary system. Each cartridge sits in its own channel in the magazine, which prevents rim overlap and reduces the chance of jams compared to conventional stacked-round designs.
Is this a factory original magazine or an aftermarket replacement?
This is a genuine Ruger factory OEM magazine manufactured to the exact same specifications and tolerances as the original equipment that comes with the 77/17 rifle. It's made in the USA and uses the same materials and heat-treating processes as the primary magazine.
Can I use this magazine for varmint hunting and range shooting?
Yes, this rotary magazine works equally well for range practice, target shooting, and varmint hunting. The reliable feeding and easy loading make it practical for any use. Many folks keep multiple loaded magazines on hand for bench shooting sessions or field work where quick reloads matter.






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