The Ruger BX-15 Magnum is a factory detachable magazine offering extended capacity for rimfire rifles chambered for .17 HMR and .22 WMR. Designed around proven Ruger feed-lip geometry, it pairs stainless-steel feed lips and a constant-force spring with a high‑lubricity polyacetal anti‑tilt follower. The durable glass‑filled nylon magazine body is engineered for reliable function and easy cleaning. It is compatible with Ruger 77/17, Ruger 77/22, Ruger American Rimfire and Ruger Precision Rimfire rifles chambered in these calibers.
Key Specifications
- The magazine capacity is 15 rounds.
- Compatible calibers are .17 HMR and .22 WMR.
- Constructed with a glass-filled nylon body with stainless steel feed lips.
- Includes a high-lubricity polyacetal anti-tilt follower for consistent feeding.
- Uses a constant-force spring to maintain reliable pressure on the follower.
- Designed to fit Ruger 77/17, Ruger 77/22, Ruger American Rimfire and Ruger Precision Rimfire rifles.
- Factory series designation is the BX-15 Magnum.
- Finish color is listed as black in several sources; see notes for a discrepancy.
- Packaged dimensions are listed as 1.75 x 5.20 x 10.75 (units as provided).
- Country of origin is listed as US.
Built around Ruger’s established magazine geometry, the BX-15 Magnum gives shooters extended range time and straightforward maintenance without complex servicing. Its combination of stainless feed lips, an anti‑tilt follower and a durable polymer body provides dependable feeding and simple cleaning, making it a practical addition for rimfire shooters seeking extra capacity and proven fitment with Ruger rimfire platforms.
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