I have a Harris on a Savage LE .223, a Blackhawk on my 700 .308 and a couple of cheaper Outers on a Varmint AR and a Savage MkII TR and they have all worked perfectly. I don't baby my guns or accessories. They are well taken care of, but like any tool they are used because I want to know if my equipment will fail. My bipods have all performed as expected, no loose screws, springs, etc. from the cheaper ones on up. My favorite one of all is the Blackhawk, as it seems to operate just a little smoother.