The Backpacker Optic Mount is an optic mounting solution that takes the functionality of the X-22 Backpacker stock to the next level by providing the end user with an elegant and functional mounting platform for the red dot optic of their choice. Machined from milspec-anodized aluminum to exacting standards, the Backpacker Optic Mount provides an extremely strong and repeatable optic mounting platform. The mount replaces the factory barrel block, thus allowing for an unobtrusive and sleek design that also provides for the use of open sights without having to remove the mount. Made in USA.*Note- this is not compatible with distributor exclusive rifles that come with the Adjustable Fiber Optic Rear Sight.