Armalite scope assembly
The scope is the same as the AR15 3x20 scope but is marked Armalite, the mount is specific to the Ar180 & has a spring loaded "pin" at the rear that fits against the rear sight base, you push back w/the pin against the base until the mount slips over the base rails on the upper receiver then the spring pushes the mount forward to it's lock position, the lever at the bottom front of the mount is then used to lock the mount/scope assembly into position. Note also the seperate charging handle which is not part of the bolt carrier, it fits into a cutout in the carrier & must be removed to get the carrier/bolt group out of the receiver.
Other Sizes: Original