I am looking at buying a AR-15 that was converted for F/A. This particular one has a 10.5" upper installed. I was wanting to understand the process for being able to use different uppers on this. The rifle has screws in place at the front pivot point. I want to be able to use different calibers on this in the future and these builds will most likely be 16" barrels. By removing the current upper from the lower, do I need to do SBR paperwork to do that? This would be my only AR-15/M-16 lower. I have always dealt with HK's so I have been reading around and see information basicly stating the a 10.5" upper is not considered a SBR by itself, only when installed on a lower. Since my lower is a MG, there is no need to SBR paperwork to be done. Thanks for the help
Just wanted to make sure a short barreled upper isn't concidered SBR on these platforms. thanks
Originally Posted By streetrod:
Just wanted to make sure a short barreled upper isn't concidered SBR on these platforms. thanks
Correct, unlike HK the upper on an AR is not the firearm they are just a part.
