i work at a Cat dealer and purchased one of the cat branded pistol grip grease guns about a year ago, the part number is 190-5622 i think they are about $40 to the general public, best i can tell its the same as an Alemite 555 which are $60 on amazon. has served me well and have had no issues with it.
thanks
I'm sure the CAT one is good. If that is hard to find, I like the Lincoln.
Last one I got was an unused Alemite on ebay. That’s the way to go. Something like $25. USA made.
That would be a lever gun or a very old NOS gun. There isn't any pistol grip grease guns currently being made in the States.