I purchased this for a PCP air rifle for target practice and didn't want to mess around with going to a scuba shop or similar place to fill up the tank. I will say that getting up to 3000 PSI is a legitimate workout on the arms and lower back but if you take a quick break every 20-30 pumps, then it's very manageable and you get a bonus workout in the process. The only complaint I have (and it is minor) is the lack of clear/detailed instructions on assembly and the fact that you may need to add or adjust the gaskets (several of which are included already) in order to get a solid seal with the hose attachment. I used the pictures to confirm the placement of the pressure gauge. Other pumps have the gauge on the opposite side.In conclusion, it does the job (once it's set up) and is way cheaper than the one the air rifle manufacturer sells ($160 vs $57).