06-02-2014, 04:06 PM
As long as you stay away from 6061 T6 aluminum uppers, 7075 T6 billet or forged will be fine. You'll never know the difference in strength from an end-user perspective. The main things for maintaining accuracy aside from barrel quality and construction will be a very tight fit in the barrel extension tunnel in the upper receiver, against true faces and threads.
What are you intending to use this for?
What are you intending to use this for?
