M6J/C carbine

The M6J Carbine is a United Nations Space Command ground firearm.

It is the carbine variant of the M6 Series of sidearms made by Misriah Armory, and is used by the UNSC Army.

Trivia

 * A carbine, in pistol terms, is a sidearm with an attached stock. It is most likely that the M6J is most likely similar to an M6D, with an additional stock and barrel to increase its size to that of a carbine weapon and its dead mass (thus reducing an active recoil) and to allowing more precise aiming.