Guys, I am new to the forum, but have been lurking for a while. I have an ACR and just purchased a USO SN-4 for it. I was trying to find a good quick release mount and would like your opinion. I was looking at either a LaRue Tactical or a Bobro, both seem to be about the same price. Which model should I get? Do I want a standard, slightly forward or extended with the USO? I am replacing a EOTech EXPS2 on the ACR, so any help or advice would be great. thanks in advance