This is a Leapers, Inc. - UTG Gas Block known as the Model 4/15, model MTU012.
The UTG Pro Quad-Rail Gas Block replaces the A2 front sight and provides 4 Picatinny Rails. It Includes Gas Tube Roll Pin and Locking Screws.
Features:
Aircraft Aluminum
Hard Anodized
Includes Gas Tube Roll Pin and Locking Screws
