I am looking to invest into an AR15. I have just under $1,000 and have found a couple of local gun shops that sell complete AR's for around $600-$800. Most GS's carry completes with name brands (bushmaster, S&W) without the forward assist and dust flap etc... a couple of stores carry completes with "off" brand lowers such as armstrong and surplus ammo. Questions: 1) I know there is a difference between cheap and inexpensive. Are these lowers just inexpensive because they don't carry a big name or are they cheaply made. I don't want to have to replace because it will fail. 2) Is there any reason not to get an "off" brand lower like this, then make upgrades as paychecks come in? With all the newly CT "felons" (I Stand with CT) and our fairly liberal state (OR). I figure it would be better to have an AR now than to not have if/when needed. The Specific complete I am looking at is an Armstrong lower .223 / 5.56; 1-9 twist.