one. 買a鑽and幫yourself
二. buy料and做it自已來(yourself)
3. spring, others我唔know
四. paint咩
five. E=0.5mv^2 where E = kinetic energy of the bullet, m = mass of bullet, v = muzzle velocity
6. yes (是), definitely (絕對會)
VII. it depends (依靠) on your modifying (改裝) skill, and the degree of seriousness fluctuates from time to time (次)
對不起for我的bad chinglish