What are you talking about when you say Tactical???
I have two ARs, one set up for high power and one set up for Practical type shooting (3 gun, Multi Gun).
My "practical" gun is nothing more then a stock SP1, no scope, and is good for up to 400 yards.
Of course my White Oak Service Rifle is good for a bit better then that and it also has iron sights.
When it comes to Practical shooting, I'm of the KISS crowd. Less crap you put on, the less crap that will screw up on you.
You cannot Gimic your way to good scores. I'd vote for putting the gimic money in rounds down range.
CPT USAR Ret
USAMU Sniper School Oct '78
Distinguished Rifle Badge 1071