im starting out and i need to know if i can use 3d printed knives also whats the best pistol as in what pistol like m1911, a glock a sig p226, 5-7 to name a few also what sniper rifles or dmrs are good like a scar l96 m24 and other sniper rifles i can only name some but i want to know what pistols, sniper rifles and dmrs are good.