Ozman and I just exchanged uppers on our AR's. Does a FA10 need to be filled? I know the upper is not the gun but, when I bought my AR it came with the 16" barrel and it was registered with it. Now I have a 20" barrel, and vice versa for Ozman.
I think the answer is no, but I want to be sure.
I think the answer is no, but I want to be sure.