Perfect proprietary mount for magpul x22 backpacker stock. - Magpul Industries X22 Backpacker Optics Mount

I purchased this product along with the Magpul Backpacker stock for a Ruger 10/22 Takedown carbine. Both products I believe are specific to each other and as such are not interchangeable with any other firearm that I am aware of. I am using this product with a red dot sight on an ADM quick-detach optic mount. The reason for this is to enable me to use the iron sights when the optic is removed. This item replaces the barrel block of the firearm as the mount itself becomes integral to the barrel assembly. Very well designed and executed concept and the actual machining is superb. Worth the money and there is no other product like it. American made.