Ok, so I am building an ar-15 and confused, I am going with a WOA upper reciever and it says it has m-4 feed ramps ok, doesn't the barrel too have ramps? I am so confused.....ANY IDEAS OR ADVISE would be of great help.
will any upper work with any barrel? what should I look for when purchasing so I dont get the wrong part?
will any upper work with any barrel? what should I look for when purchasing so I dont get the wrong part?