A massive bolt with a tranq dart mounted on the front. Used as an underwater tranquilizer projectile with the Harpoon Gun. If it doesn't break, you can recover the spear bolt.
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Advanced Bullet 
Advanced Rifle Bullet 
Advanced Sniper Bullet 
Boulder 
C4 Charge 
Cannon Ball 
Cannon Shell 
Chain Bola 
Explosive Arrow 
Flame Arrow 
Flamethrower Ammo 
Grappling Hook