This is a factory BX-1 10-round magazines for Ruger 10/22 rifles in .22 LR.
Combining lightweight polymer construction with steel-reinforced feed lips, and a rugged design that ensures long-term rimfire reliability, Ruger’s BX-1 magazines are designed for maximum reliability and consistent feeding.
America’s most popular rimfire rifle for over half a century, the Ruger 10/22 is an iconic firearm that you probably already own. These BX-1 magazines were designed in-house by Sturm Ruger & Co. to go along with other BX series upgrades and elevate the average 10/22 into something even better …
Ruger’s rotary 10/22 magazine is already an ultra-reliable piece of hardware, but BX-1 magazines take it to the next level with superior craftsmanship and proven performance.
These magazines are compatible with the original 10/22, SR-22, 22 Charger, 22 LR American Rimfire, and 77/22 rifles.