Vortex Sights on an AR
A friend of mine is currently adding some options to his AR-15 and is considering adding a Vortex sight. I have found nothing negative about Vortex in general, but was wondering if anyone here has the SPARC model with a 2X magnifier on their AR. Did you notice any shortcomings, or have specific reccommendations for other optics on an AR?
By the way, it is a carbine and is being set up for close quarters, not long range.