I had an Advanced Technologies 4 position on mine and hated it. Quality was decent just didn't fit me worth a crap. Now for about7 years I used and abused an Advanced Tech. top folding stock and LOVE it. I sold my original to a friend for more than i paid and then ordered that 4 position and needless to say the top folder is coming back. I shot some heavy loads, dropped it, banged it, and in general abused it. Just my old everything/truck gun.