I'm thinking about building an AR. I've owned a Bushmaster and a Rock River but currently I only have a 9mm carbine. I don't want to get into a piston gun, too pricey and some models have issues. I'm thinking about a relatively light gun with a basic setup. I have not been keeping up on AR developments in the last couple years so I don't know where to fond certain things. I want a chrome lined barrel and would like the upper/lower/bolt carrier/trigger group to be chromed or NP3'd too. Basically just a really easy gun to clean. The bolt carrier is easy to find in chrome. The upper, lower, and trigger group are not as easy to find. Any info on these parts would be very appreciated.