I suggest you call Stuart at CZ Custom and ask him if this gun is OK for duty/carry use. Depending upon how it was tuned, the hammer & action springs may need to be slightly beefed up, particularly if you will be shooting +P ammo. Also, they may have installed a long firing pin, and you may want to go back to a standard pin & spring. Anyway, it'll be a conversation worth having. You might even go back to the seller and see if he can get the CZC build sheet. Great gun. I, too have a P-01 that has been tuned by CZC.