I use it on my: PTR 91 KF, H&K Slb 2000, Sako .30-06, Tikka 9.3 x 62, CZ 550 .375 H&H, Glock 17, and Sig 226. So, I guess I do like it. The trick is: to thoroughly clean your old lube / CLP off your gun before treating the metal with Fireclean. Doesn't really work or mix well with other lubricants/protectants.