frog lube huh? i use the paste. i use it to clean the surface of my guns, smells sweet and keeps em' shiny! i however, do not use it as a lubricant, (again i have the paste) i tried it out on my .22. fte after fte.... sprayed break-free onto the action, not a single problem for the remainder of the 500 rounds i shot that day. i am sure that other frog products might work. i bought it really because the bubba at the gun shop swore by it. well, if it didnt work in my .22, im damn sure it wont work on my AR, but again, it does do a nice job of cleaning the metal though!!