ok just to be clear, I'm talking about the slanted ACOG style. The only reason I want flip caps is because I hate the banded cap type that comes with it. Not a big fan of fumbling around with it and then having to find a place to put it. Much more simple just to flip it. I'm not to concerned about peripherals since I still haven't found a place to run drills. I suppose I'll have to take 586L's advice and find a shop with a selection. That'll be like finding a needle in a hay stack. Sacramento is the worst area in CA when it comes to gun stuff