I needed a pump for my PCP air pistol and I'm very happy with the results. The instructions are a little sparse but adequate if you take the trouble to read them. The immediate impression is of a well made product. It feels very sturdy and comes with replacement O rings and other bits. I must admit it takes a fair amount of effort if you are of a slender build. I'm just under 70kg and 5" 10 and can manage it ok but it does get hard when you are close to 20mpa. I've not tried other pumps so can't compare. It's worth every penny I paid for it.