I have a very close to new DPMS BUIS that I want to trade even steven for a carry handle to go on my A-3 upper I will cover shipping on my end and you do the same on yours here is the DPMS discription of what it is and a pic for your viewing pleasure would love to get a trade by this weekend.
The Mangonel Rear Flip Up Sight uses an aluminum base with steel legs and a steel clamp for durability and strength. This sight unit uses a 0.150 aperature that rests at the standard A-2 rear sight. A large thumb knob is easily manipulated to loosen or tighten the clamp. The sight is designed to fit on the Mil-Std 1913 Picatanny accessory rail. The Whole sight assembly weighs only 3.2 ounces. It is a good companion for the Eotech Holographic's Sight and other optic packages.