The TruGlo 2009 Fiber Optic Ar-15 Style Front Gas Block Sight is the industry's Brightest AR-15 fiber-optic gun sight.
Featuring Extra long, super bright, protected green fiber and integral mount for Military Standard 1913 Picatinny and Weaver-style rails the TG115 is designed to mount on front gas blocks.
The TruGlo Gas Block site also has click elevation adjustment and includes a handy sight adjustment tool. An optional push-button light is included for use in complete darkness. Well-made with CNC-machined construction and a Green front.