The Henry BBCSM Big Boy Scope Mount is a cantilever-style, one-piece base designed specifically for first-generation Henry Big Boy lever-action rifles in pistol calibers (.44 Mag, .45 Colt, .357 Mag, .41 Mag, and .327 Federal Mag). If you own an early Big Boy and want to mount a scope for hunting or target shooting, this mount bridges your rifle's drilled-and-tapped receiver to modern optics without the bulk or complexity of two-piece systems. The matte black finish blends seamlessly with steel-receiver Big Boys and resists glare in the field.

This mount is engineered to work only with 1st generation Big Boy rifles—those produced before September 2011 with receivers drilled and tapped on the underside of the barrel (typically rifles roll-marked Bayonne, NJ). It accepts standard Weaver-style detachable 1-inch top rings, giving you flexibility to swap optics or rings as your hunting situation changes. The cantilever design keeps your scope forward of the action, preserving sight picture and reducing parallax issues common with shorter-reach mounts.

Critical compatibility note: Do not order this mount if you own a .30/30 or .45-70 Henry rifle—those require a Weaver 63 base. Similarly, 2nd generation Big Boys (serial numbers starting H006BB0047222 and later) use a different receiver-mounted system (the BB-RSM) and will not accommodate the BBCSM. Installation is straightforward, and instructions ship with the mount. Rings are sold separately.