Sorry to post this in the GD Forum, but it gets the most traffic and I need an answer soon. I want to buy a telestock for a pre-ban Colt lower. I was recommended to get the genuine Colt 4-position. I found them for sale at J&T Distibuting for $125. The saleslady said that they carry a superior model (some military supplier manufactures it) called the M4 6-postion for around $85-$90. Does anyone know which is the better choice. I want to order one ASAP, but don't know which one. Thanks, guys!