UT_Air_Assault
New member
Me and a buddy where discussing the other day on how you convert an AR-15 to 9mm. Since I have no experience with a subgun/carbine M-16/AR-15, I figured I'd ask it here.
Are the 9mm uppers just like any other upper, in that all one has to do is slap it on the lower and be ready to go? Or do you have to make significant changes to the lower reciever?
Are the 9mm uppers just like any other upper, in that all one has to do is slap it on the lower and be ready to go? Or do you have to make significant changes to the lower reciever?