Swapping over to a flat top upper receiver on an AR

[1956_4x4]

I have an AR that I used to fire in competition. I'm thinking about replacing the upper with a flat top that can hold some optics since my eyes are no longer what they used to be when I was younger. This AR has a very heavy 1" barrel and I want to make sure that the extra weight of this barrel won't cause any problems with a "normal" flat top upper receiver. Has anyone had problems with uppers in this type of situation? Are there any manufacturers that I should stay away from and if so, why?

Smitty

 

[Duelist]

Shouldn't cause any problems, unless you have to open up the barrel nut. Oneshot in Jay opened up mine for me. Good luck with your project, I am still waiting for an upper, going on 7 weeks now.