Trijicon RMR red dot installed on an Armadyne direct mount on a Henry Big Boy receiver.

Henry Big Boy - RMR Footprint

$39.95
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Trijicon RMR red dot installed on an Armadyne direct mount on a Henry Big Boy receiver.
  • Trijicon RMR red dot installed on an Armadyne direct mount on a Henry Big Boy receiver.
  • Trijicon RMR red dot installed on an Armadyne direct mount on a Henry Big Boy receiver.
Henry Big Boy - RMR Footprint

Henry Big Boy - RMR Footprint

$39.95
HBB-RMR

Fit check: Fits Henry Big Boy rifles with threaded receivers.
Available on backorder Ships in 1-2 weeks. Payment is collected when you place your order.

RMR footprint mount with #6-32 optic mounting threads. Compatible optics include the Trijicon RMR, Holosun 407C and 507C, and other optics that share the RMR footprint.

About This Henry Big Boy Mount

This low-profile direct mount connects your optic to a threaded Henry Big Boy receiver without a separate Picatinny rail and optic mount.

Compatibility

This mount fits Henry Big Boy rifles with threaded receivers.

Installation Notes

Unload and clear the firearm before installation. Remove any factory rail or other mount, position the Armadyne mount on the threaded receiver, and secure it with the supplied two #8-40 x 3/16 flat-head screws.

Attach the optic to the mount and dry-fit the assembly on the receiver before final installation. Confirm that no optic screw protrudes far enough to contact or scratch the receiver.

Tighten the #8-40 receiver screws to 15 in-lb when installed dry. Liquid thread locker is optional; if used, reduce the torque to 11.25 in-lb.

Follow the installation instructions for the complete optic-screw check, torque values, and optional thread locker guidance.

Designed and Manufactured in the USA

Armadyne mounts are designed and manufactured in the USA. Each mount is CNC machined from 6061-T6 aluminum in our Lincoln, Nebraska shop, then sandblasted and finished with H-Series Cerakote for wear and corrosion resistance.

Warranty and Returns

Armadyne stands behind the mounts and components we manufacture. Review our warranty and returns information for support, exchanges, and discretionary return terms.