Henry Cantilever Rifle Scope Mount Cantilever Black Aluminum Fits Henry Big Boy H006 Lever Action - BB-CSM - 619835600004
Product Description
Mounting optics onto brass-receiver Henry Big Boy lever-action rifles (H006 series) presents unique structural challenges. Non-drilled brass receivers cannot accept traditional top-mounted scope bases, while drilling into solid brass receiver tops compromises historical aesthetics and collector value. The official Henry Cantilever Rifle Scope Mount for Big Boy H006 models (BB-CSM) resolves these optics integration hurdles by anchoring directly into the factory-tapped barrel dovetail holes located beneath the rear sight, extending back over the receiver top without contacting the brass frame.
Precision-machined from lightweight, aircraft-grade billet aluminum and finished in a non-glare matte black coating, this genuine factory mount provides a rock-solid, vibration-free platform for traditional rifle scopes or red dot optics. The cantilever design reaches back over the action to establish proper eye relief for standard-length hunting scopes while allowing cases to eject cleanly out of the side ejection port without binding against optic hardware.
Engineered specifically for Henry H006 Big Boy models chambered in .44 Magnum, .357 Magnum, and .45 Colt, the BB-CSM mount delivers true drop-in factory optics capability while fully preserving your receiver's untouched brass finish.
*Armorer Bench Notes & Real-World Staging Guidance:
Fitment Matrix: Direct factory compatibility with Henry Big Boy H006 series lever-action rifles featuring brass receivers and factory barrel tapping under the rear sight (e.g., H006, H006M, H006C chambered in .44 Mag, .357 Mag, or .45 Colt). Not compatible with steel-frame Henry Big Boy models (H012 series), Henry Golden Boy .22 LR models (H004 series), or octagonal/round barrels without barrel tapping.
Installation Sequence:
- Safety check the firearm, cycle the action, and physically and visually inspect the chamber and tube magazine to confirm an empty status.
- Drift out or unscrew the factory rear buckhorn sight to expose the factory-tapped barrel mounting holes.
- Degrease the tapped barrel holes and the underside of the BB-CSM mount base.
- Align the cantilever mount onto the barrel mounting points and apply a small drop of medium-strength blue threadlocker (Loctite 242) to the included mounting screws.
- Torque mounting screws evenly to manufacturer specifications (typically 12–15 in-lbs). Allow threadlocker to cure before installing Weaver-style scope rings and sighting in.
Key Features
- Genuine Henry OEM Factory Production: Engineered directly by Henry Repeating Arms to ensure exact hole spacing and barrel contour match.
- No Receiver Drilling Required: Anchors securely to factory barrel tapping, preserving untouched solid brass receiver tops.
- Cantilever Extension Geometry: Extends rearward over the receiver to provide proper eye relief for conventional hunting optics.
- Precision Aircraft-Grade Aluminum: Lightweight, rigid construction withstands heavy Magnum lever-gun recoil without shifting zero.
- Matte Black Anodized Finish: Non-reflective surface coating resists corrosion, weather exposure, and scratch wear in the field.
Product Specifications
- Brand: Henry Repeating Arms
- Model: Big Boy Cantilever Scope Mount
- MPN: BB-CSM
- UPC: 619835600004
- Platform Compatibility: Henry Big Boy H006 Series (Brass Receiver Models)
- Calibers Supported: .44 Magnum, .357 Magnum, .45 Colt
- Material: Aircraft Aluminum
- Finish: Matte Black
- Rail Interface: Weaver-Style Ring Compatible
- Included Accessories: Barrel Mounting Screws
