TheodoreP3 3 years ago ReplySince almost all M16 series weapons are MILSPEC meaning the parts are interchangeable ie all made to the Military Specifications price is really the only factor. Dont get something special just to have something special parts are easy to find for MILSPEC firearms. One exception is that some "brands" sacrifice quality to make money. I recommend browsing Brownells.com and reading reviews after sorting by price. You will see quickly that a Colt is the same as the generic. T6 Aluminium doesnt get better when you write a name on it. Save your money for more rounds.