I built an M16A4 clone using a 20" BCM upper and like an idiot sold it thinking I needed the money. I now want to build another one but am going to use the FN CHF barrel from PSA. I cant decide on the A2 profile or the stainless steel heavy barrel. Ill be using it for all around shooting. I hear the FN AR15 chf barrels are accurate, but is the stainless that much more accurate? The difference in price is only like 30 bucks. Ive never played around with a 20" heavy barreled AR so I dont know if they feel like a tank or not. The A2/government profile was pretty agile for 20"