I think they are out of the OPs budget and not what he wanted. There are limited models available for sale in MD and from their website it doesn't look like they have any MD compliant ARs to choose from. I'm sure colts are GTG but there are a lot of options and for me Colt is not on my radar.I'm approaching 20k AR's that have come across my bench or have been through my classes. Colts rarely have problems that were not created by someone messing with them.
Colt AR's have consistently efficient gas system components and their chamber and BCG are extremely consistent.
I have over 100k in tooling and gauges for just the AR. If I had none of that and had to pick one AR to blindly trust it would be a Colt.
They are not always the prettiest, but they are consistently good.
Colts also have fantastic resale value.