<prompt> Kumaliza sentensi ifuatayo na chaguo bora: Jinsi ya Kujenga Generic Air Cannon. Chaguzi: - Kukusanya 2 Pressure-rated PVC bomba, 4 mwisho cap, 3 reducers, mpira valve au solenoid valve, Bushings, na bomba nipples, pia kukusanya zana yako, Fit Vipande Pamoja ya mabomba yako, kufanya vyombo vya habari chumba, Kuunganisha Valve na Barrel, mtihani na shida risasi bunduki. - Kukusanya 3 shinikizo-rated PVC bomba, 3 mwisho cap, 2 reducers, mpira valve au solenoid valve, Bushings, na bomba nipples, pia kukusanya zana yako, Fit Vipande Pamoja ya mabomba yako, kufanya chumba shinikizo, Kuunganisha Valve na Barrel, mtihani na shida risasi cannon. Jibu:  <response>: Kukusanya 3 Pressure-rated PVC bomba, 3 mwisho cap, 2 reducers, mpira valve au solenoid valve, Bushings, na bomba nipples, pia kukusanya zana yako, Fit Vipande Pamoja ya mabomba yako, kufanya chumba shinikizo, Kuunganisha Valve na Barrel, mtihani na shida risasi bunduki. 