XS Sights Lever Rail for Henry Big Boy .357 Mag — Black

The XS Sights Lever Rail provides a Mil‑Standard 1913 Picatinny mounting surface for Henry Big Boy carbines chambered in .357 Magnum. It is precision machined and hard coat anodized for durability and is intended for use on steel receivers with round barrels. The rail spans the receiver and extends forward to the rear sight cut to allow mounting of scout scopes, red dot optics, or low‑power variable optics.

Key Specifications

• Compatible with Henry Big Boy carbines chambered in .357 Magnum and explicitly does not fit Big Boy X variants.
• Requires steel receivers and round barrels due to receiver and barrel contour differences.
• Mounting interface is Mil‑Standard 1913 (Picatinny) for broad optic compatibility.
• Constructed from aircraft‑grade aluminum with a hard coat anodized surface for wear resistance.
• Finish is listed as a black matte coating.
• Dimensions are listed as 1.90 x 1.75 x 13.45 (as provided in product data).
• Weight is listed as 0.35 (unit not specified in source data).
• Installation requires removal of the factory rear sight and all screws torque to 20 inch‑pounds.
• Accessories: Rings not included; uses standard Weaver/Weaver‑style rings where applicable.

This lever rail turns a factory Henry Big Boy carbine into a platform ready for modern optics while respecting the rifle's original form. Engineered for a secure mounting footprint and positioned for practical eye relief options, the rail supports a range of sighting solutions from red dots to low‑power scopes. Its precision fit and durable finish make it suitable for owners who need a reliable, low‑profile optic mounting solution for their .357 Magnum Henry lever gun.