Appears to be a generic part - Armalite M15 Detachable Carry Handle Assembly

There is absolutely no Armalite part number or name anywhere on this part. It came in a foam wrapper with a number on it. One would guess it is the item number from whomever made it. The rear sight elevation is off to one side and does not move parallel to the frame. This looks like the cheaper version for sale on the web site. If I paid $30 like the others, then I would expect the poor quality. I paid $120 for an Armalite part. I returned it for a refund.