Lightsped
Member
I have an Olympic Arms AR15 chambered in 9mm. I would like to buy an .223 upper (complete).
Besides the upper, barrel, charging handle, and bolt carrier is there anything else I would need? Will a .223 upper simply "plug and play" into my 9mm AR15?
Besides the upper, barrel, charging handle, and bolt carrier is there anything else I would need? Will a .223 upper simply "plug and play" into my 9mm AR15?