Micro 16 assault rifle

The Micro 16 assault rifle, also known as the "Carter Special", is a custom submachine gun developed and used by Samantha Carter during the Stargate Program's seventh year. She used it prior to switching back to the P-90.

Behind the scenes
The armorers for the show assembled the weapon by using parts from three different weapons. The receiver of the weapon is from a standard M-4 Carbine. The barrel is 7.25" long, much shorter than that of a CAR-15 or M-4, and was taken from a Bushmaster Carbon-15LE SMG. The modified thumb-hole stock is from a Sterling AR-180, the semi-auto version of the Armalite AR-18. A forward tactical grip has been installed as well as ELCAN OS3 4x28 after-market optical sights. Carter exclusively uses a 100-round Beta C-Mag with this weapon.