Well, I finally got a chance to shoot my BRA Spartan gas piston upper...I cant put it into a single word. Since I was new to gas piston, I was amazed at how cool the bolt carrier remained, even after several hundred rounds. The cleanliness of the system kept me shooting, without feed or extraction issues, for hours. I shot expensive ammo and comlete crap ammo. This thing took it all. Post-shooting cleanup occurred a couple of days later (I got busy- don't judge me!). Considering the delay, I was quite surprised at how easily everything cleaned up. T&C were great during pre-sale, All my questions, no matter how idiosyncratic, were answered, and all my requests were met. Overall, I'm very happy with this setup and look forward to shooting it for years to come.
Reviewed by: Ven from Chesapeake, VA on 4/17/2015