I recently bought
IT for my SCAR, and I'd very much recommend it to anyone who'd like to make theirs more reliable and harder kicking.
The whole feels much more solid than the original pot metal parts, and looks a lot smoother on the side (as well as realistic, given the mock lock carrier pin). The sound is a lot cleaner too.
The installation might also require to sand down the plastic guides for the nozzle, but making everything fit shouldn't take longer than 20 minutes. I think these parts are a compromise between the original and the Ra-Tech ones (which I believe are inferior), since the latter are much heavier and I've heard reports of not working very well, specially in full auto.
Very pleased with this upgrade, here's some pics.
