I decided to attach my Vortex Sparc this afternoon after prepping the rifle for the range; took it down to Field Time Target & Training in Stanton. I've gotta say, I love this rifle. Ran flawlessly with the range reloads, Federal XM193, and PMC .223 - only put 65 rounds down range this evening, but I'm thinking I may go back tomorrow and spend more quality time getting to know my rifle.
Thank you for the opinions on the MOE handguard and MVG; I think I'll be asking for those for Christmas.
Now to find myself a nice affordable source of ammo... (outside of reloading, for the time being anyway)