Ok, before you guys flame me, yes I have been doing research on it. I know the PTS stuff is "cheap" or "airsoft" stuff, but really... what's the difference. When we're talking about plastic this vs plastic that, how much of a difference can there be? The PTS MBUS sights are $60 cheaper, but they're both plastic, both spring loaded, both metal where needed, and both stamped with Magpul. Same goes with the stocks and grips. I know the NON-CTR stocks all have wiggle room, so how much cheaper can you get with the PTS model? Also, I know the arguement could be made that with the PTS MBUS for example, a 5.56 round could "shock" it out of zero while firing, but I dont see that happening on a 15-22. Anyone use any of the PTS stuff? Thanks!