These are a US Government contract overrun, only a few available.
The Mini Rail is designed to allow mounting a micro optic sight used for rapid acquisition and close range engagement on top of the standard magnified scope and replaces the upper rear NightForce Scope ring.
Precision machined from 6061 T6 Aluminum alloy with Mil-A-8625 Type III Class 2 Hardcoat Anodized finish.
Made in USA.