AR-15 Upper Receiver Jig
This Upper Receiver Jig holds your A2 or A4 upper receiver in position while still allowing your bolt carrier assembly to move freely. Just set your upper into the slots, push the pins through and clamp the jig in your bench vice. The Jig can be used to install barrels or any other work. Made of high quality Delrin Plastic and stainless steel pins. Fits all mil-spec receivers.