The Sub-Machine Gun is a black gun with a red dot on the front sight. Like other weapons in the game, the Sub-Machine Gun is massive in comparison to Shadow.
In gameplay, the Sub-Machine Guns can only be found in certain Stages. They can be wielded by enemies aligned with GUN, such as Big Foot-type foes and Gun Beetles, who will use them against the player.
Sub-Machine Guns can be dropped by defeated enemies that wield them or released from breakable Containers. Touching them will make Shadow pick them up automatically and pressing // (whether on the ground or in mid-air) fires them. Holding down // makes them fire continuously shots as well. As a gun, the Sub-Machine Gun can shoot enemies from a distance (targets within range will be automatically targeted). By comparison to other weapons, the Sub-Machine Gun has a short range and low damage output. A Sub-Machine Gun has a total of twenty shots and once those run out, it becomes useless. However, it can be reloaded with another twenty shots by picking up another Sub-Machine Gun.
The Sub-Machine Gun is modeled after the Heckler & Koch MP5 judging from the select fire markings and the overall design of the gun.
When equipped by Shadow in the opening movie of Shadow the Hedgehog, the gun is somehow cocked akin to a pump-action firearm, which is not applicable to any factory original sub-machine gun ever made.
When Shadow loads a magazine into the gun in the opening movie, it appears to use the controls of an AR-15 platform, which is incorrect for MP5 and reminiscent of the SIG MPX, a gun similar to the MP5.
↑Kaizen Media Group (22 November 2005). "Appendix". Shadow the Hedgehog: Prima Official Game Guide. Prima Games. p. 91. ISBN 978-0761551959.