Michael De Santa carries a modified Carbine Rifle outside Lester's Garment Factory in one of the original Grand Theft Auto V artworks.1 In Grand Theft Auto Online, later updates gave the rifle new customization options.2
GTA Online upgrades
Title Update 1.34 added a drum magazine for the Carbine Rifle at Ammu-Nation.2 With Gunrunning, players gained the option to upgrade the original rifle to the separate Carbine Rifle Mk II at the Weapon Workshop of an owned Mobile Operations Center.3
The similarly named Service Carbine is a different weapon.
References
Original Grand Theft Auto V Artwork: To Have and to Hold, Rockstar Games, published November 12, 2013. Accessed September 23, 2026.
GTAV Title Update 1.34 Notes (PS4/Xbox One/PC), Rockstar Games Support, June 2016 update notes. Accessed September 23, 2026.
GTAV Title Update 1.40 Notes (PS4/Xbox One/PC), Rockstar Games Support, Gunrunning update notes. Accessed September 23, 2026.