Here's my totally unqualified opinion, based on having observed KAC from a distance, since they built the coolest revolver I've ever seen (about 20 years). They manufacture products that fit a particular niche, or requirement. They know their market, their market is not primarily guys shooting AR's on the back 40 (in the US) or at the range (in Canada). If guys shooting AR's buy their stuff, great, but they'll be buying KAC stuff, not inferior or watered down (for the niche) stuff marked KAC. They sell pretty much everything they can produce. They sell it all at a profit. Is the stuff good, you bet. As a civillian do you absotively, posilutetly need it - no. Does anyone at KAC loose sleep at night because DPMS sells more AR 15's or EGW sells more breaks.....
Don't say I didn't warn you that my opinion was unqualified, after all, it is just an opinion and we all know about those.