"Prototype sonic-harpoon artillery remote projectile (SHARP) rifle; fires time-delayed explosive tipped darts that embed themselves into enemies or terrain."
Armat P9 S.H.A.R.P. Rifle description (from Aliens: Colonial Marines)

The Armat P9 Sonic Harpoon Artillery Remote Projectile Rifle (SHARP Rifle), nicknamed the Sharp Stick after its unique ammunition, is an American prototype weapon firing time-delayed explosive-tipped darts. The weapons saw limited use with the United States Colonial Marine Corps.


The SHARP Rifle has no secondary ammo, but it can fire time-delayed explosive-tipped darts that embed themselves into enemies or terrain which are capable of taking out several Xenomorphs with one shot and also capable of bringing down a Crusher with only one magazine.