Well my son has been itching to put together a Crosman gun so we broke out all the parts from the ccs 2400 kt build i did and the 2250b build then slapped all the best parts together. He did all the work with me pointing and oh man ooo watch that ohman be carefulling every 2 minutes behind him. Was a great time and he has a 22xx with boss valve, mountainair barrel, power adjuster, long probe bolt, tko 1911 trigger and spring, ccs trigger spring adjuster, tko 6.5 in break, crosman stock. All custom fitting and spacing done by me. He slapped all the parts together and now it Just need optics. Had a blast and he i super happy. Gotta love airguns bringing a family together.