Aerospace engineer or mechanical engineer
The muzzle of a barrel is end out of which the bullet comes.
The muzzle is that the front of a barrel from that the projectile can exit. Precise machining of the muzzle is crucial to accuracy, as a result of it's the last purpose of contact between the barrel and also the projectile.
The term bullet is from Middle French, originating because the diminutive of the word boule (boullet), which implies "small ball". It a small, metal object that's dismissed from a gun. It's conjointly called pellet, lead, shot, ammunition, and buckshot or bolt. Full metal jacket bullet is mostly used for target shooting and competition.
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Answer:
to avoid fire outbreak and it is flammanle
