Asking that question I'm sure is like asking somebody who makes the best engine oil. I would like to have found the energy susp lithium grease so I could have used it, but I didn't see that I could buy a tube for my gun and I'm sure it would have been expensive. So all I did was pick up a few lithium based tubes of grease at my local oreillys. I think as long as you used a lithium based product and not a petroleum product you should be fine. I'm sure others will disagree, but I didn't feel like spending hours researching for the best grease. So far good results, they are quiet and they really made a difference in handling.