I'm on the verge of buying my first AR platform rifle. I was set on the S&W M&P 15 sport for price, reliability, and philosophy of use reasons. However I would at minimum have to purchase a red dot sight as an upgrade even if I left everything else factory. The most affordable red dot I have seen was what I believe was a sig with 3 MOA which is fine for combat accuracy. I sont want to break the bank or pay as much for a red dot as I did for the damn gun. My dilemma is that one of my local FFLs just got some Bushmaster Carbon 15s in stock as well. They are a little more expensive but come with a red dot sight already installed. However, they do not have iron sights on them at all. I sont need them to co witness, but I do need both iron sights and a red dot or acog as well. Shoukd I go tith the S&W and find an affordable red dot to install or should I go with the Bushmaster and get some flip up sights? Which will be more cost effective in your opinion? Which is more reliable? Links to guns posted below, bushmaster is like 30 bucks more expensive presumably because its got a red dot on it already.
http://www.massfirearmsshop.com/bushmaster-carbon-with-p-2009.html
http://www.massfirearmsshop.com/smith-wesson-mp15-sport-556x45mm-p-1983.html
http://www.massfirearmsshop.com/bushmaster-carbon-with-p-2009.html
http://www.massfirearmsshop.com/smith-wesson-mp15-sport-556x45mm-p-1983.html