When you say “handgun,” I asume that you are referring to a “pistol.” I’m no PCP pistol expert, but most I’ve seen are .177 and .22 caliber. Not sure what you’re looking to do. What sort of application do you have in mind? And for what purpose? Do you have a specific .25 air pistol in mind? If so, I’d like to take a look at it. Or could it be that posting this question was an attempt at meeting the AGN 10-post requirement to access the “Classifieds” forum?for a .25 cal Pcp handgun