Discontinued by Ruger, for 50 round capacity please see the Black Dog drum.
This is the Ruger BX-25 x2 magazine, consisting of two BX-25 magazines formed into one 50 shot unit with a dustcap.
Useful for competions and general range fun they are a fast way to change 25 round magazines without fumbling for a spare.
The operation and internals are no different to the regular ultra reliable BX-25, with the same 30 degree steel feed lips, constant force springs and fully strippable tough polymer design.
Will fit any Ruger .22 LR 10/22, 77/22 or SR-22 rifle.