The Colt SP-IIs ( R6400, R6401, R6500)

I have noticed a lot confusion online about the Colt AR15 as it became the SP-2, or the AR15A2. People assume the “A2” means that the uppers should have come originally from colt with the familiar M16A2 upper everyone knows. This is a understandable assumption but it’s wrong. Colt always used up old parts from … Continue reading The Colt SP-IIs ( R6400, R6401, R6500)