AR-15 Uppers (Brand & Caliber)

Posted by NaturalAsleep2854@reddit | Firearms | View on Reddit | 5 comments

I’m curious to hear some other peoples thoughts on brand and caliber for AR15 uppers.

I’m new to firearms in general and got my first AR15 last year in .556/.223 - but I’m not happy with the quality of the “no name” upper the builder used. The lower is Aero.

What brands/model of complete upper would you recommend in .556/.223?

It was also mentioned to me that my accuracy issues could be more the caliber and not the quality of upper? How true is that?

My accuracy issue was that my first 3 or 4 rounds of a CA 10-round mag would be fairly accurate and then the remaining would increasingly become less accurate. So I assumed it was due to the barrel heating too much. If I gave it a break between mags then it repeated the same pattern and if I immediately fired a second mag then the accuracy continued to worsen continuously.

Any thoughts on swapping my .556 for a 300 Legend, 300 Blackout, or 6.5 Grendel upper? Obviously the ammo would be more expensive so I’m leaning away from that - but I’d like to hear some other opinions on it.