Magpul X-22 Backpacker Optics Mount

Directly from the Magpul website :

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 Mil-Spec anodized aluminum to exacting standards, the Backpacker Optic Mount provides an extremely strong and repeatable optic mounting platform. The Backpacker Optic Mount replaces the factory barrel block, allowing for a smooth and clean design that also provides for the use of open sights without having to remove the mount and retains zero between takedown and assembly.

Made in the USA.