United Defense AR-15 Gas Block with Two Rails - .750 Diameter
Manufactured from T6 aluminum. For AR-15 with .750 diameter barrel. Includes a roll pin. This railed gas block has both top and bottom Picatinny rails. Top rail is at same height as an A3 flat-top upper receiver. Effectively extending the area available for mounting accessories.
Designed to be the same height as an A-4 upper receiver
6061-T6 Aluminum Construction