The Trijicon RCO has become standard issue across the US Marine Corps and many US Army units as well. I take a look at the features of the optic and let you know what I think of it overall.
Trijicon RCO Link: http://amzn.to/2p5f3J6
GDI QD mount for $39: http://shrsl.com/?hr96
Gun Nut shirt: http://www.codeofconductusa.com?rfsn=545468.f7c06
Music by Youtube Creators & Machinima Sound