I love mine. I got it on my .30 cal M3 and it tighten my groups up about .25 inches at 100+ yards. It actually has helped my wife's shooting even more lol. I think it has its advantages, especially with the right setup. I actually prefer the removable but that's just me. I have seen a lot of advantages from Precision Airgunning for the integrated one. But I wanted the option of seeing if I could put it on other guns lol. I think I have some pics on my phone ill post later of the before and after with shooting with and without the tuner.