Ruger builds the BX-15 Magnum magazine (part no. 90585) for its .17 HMR and 22 WMR rimfire rifles, including the 77/17, holding 15 rounds in a genuine factory-fit body. It’s built to the same BX-15 pattern Ruger uses across its magnum rimfire lineup, giving shooters a high-capacity option over the standard rotary magazine that ships with most bolt-action rimfire rifles. For Ruger / Sturm, Ruger & Co. owners running a compatible rimfire rifle, this rifle magazine is a genuine factory-spec, high-capacity spare.

Key Specifications

• Chambered for .17 HMR and 22 WMR rimfire cartridges.
• Holds 15 rounds, a high-capacity option for the platform.
• Fits the Ruger 77/17 and other BX-15-compatible rimfire rifles.
• A genuine Ruger BX-15 factory-fit magazine.
• Fully detachable, dropping free for fast reloads.
• Classified by the manufacturer as a Magazine.
• Listed by the manufacturer under the BX-15 Detachable style designation.
• Weighs approximately 0.49 lb as shipped.
• Measures approximately 10.75 inches in overall length.
• Ships in a compact retail box, roughly 1.7 by 5.3 inches.
• Sold individually, one per package.

Frequently Asked Questions

Is this a factory magazine? Yes, it’s a genuine Ruger BX-15 magazine.

What rifles does it fit? Ruger’s .17 HMR/22 WMR rimfire rifles that use the BX-15 pattern, including the 77/17.

Buy the Ruger BX-15 Magnum 15-Round Magazine

A genuine high-capacity factory spare, this Ruger BX-15 magazine is a solid upgrade over a standard rotary rimfire magazine. Order it from our Lubbock, Texas gun shop for fast, insured shipping.