Type 4 phaser

A type 4 phaser was a small ship-mounted phaser of a type used on shuttlecraft.

In 2368, type 4 phasers were not normally installed on type 6 shuttlecraft but could be fitted for special purposes. The phasers were located on the forward tips of the two warp nacelles. The Magellan, a shuttle from the USS Enterprise (NCC-1701-D), was equipped with type 4 phaser emitters in order to chart the null space in the J'naii star system with a series of photon pulses. 

Phaser Typ 4