Hey gang, trying to sift through the utterly massive pile of new stuff on the market since I've been back. Im fixing up my old FMG4 and I have a spare gun that I've been talked into leaving mostly stock. Im looking for a shiney new field gun thats going to be reliable and most importantly have ambi controls. GBB doesn't work for me because they fall flat on their face in the cold. A lot of guys locally are running krytac and im tempted to as well for the ambi fire selector but I know nothing about them. Are they worth the $350+ for them? Can I run them stock? And most importantly they obviously aren't that standard if they come with an ambi selector... what parts will I have a hard time finding replacements for? A TBB and R-hop are definitely in the future. If theyre garbage, what are better offerings of the ambi controls variety?