I’ve got well over 1K through mine without an issue, I know that’s not a lot but not one stoppage after I tinkered with it. I had to lightly file the rear of the magwell to allow it to accept LAR mags and pmags and then used a round file to give it more of an AR feed ramp (watched video on YouTube for this) and it’s been a tank ever since. Considering new out the dealers door it was under $1000, was worth the effort into getting g it working properly. Mags all drop free too!