The DC-17m Interchangeable Weapon System, abbreviated as DC-17M ICWS, and alternatively referred to as the DC-17m Repeating Blaster Rifle or DC-17m ICWS Blaster Carbine, represented a kind of reconfigurable repeating blaster rifle. During the Clone Wars era and the initial period of the Empire's reign, it was utilized by Republic clone commandos. The weapon's barrel module could be swapped out, enabling a transformation between a repeating blaster rifle and a grenade launcher. Furthermore, it featured a "Sniper Config" for sniper functionality and an "Anti-Armor Config" for anti-armor applications.
Additionally, pirates associated with Hondo Ohnaka's gang also employed this weapon.
The DC-17m Interchangeable Weapon System's significant debut within the canon timeline occurred in "Missing in Action," a 2013 episode of the animated series Star Wars: The Clone Wars. However, it had prior brief appearances: once wielded by an unnamed pirate in the episode "A Test of Strength" and another time carried by a background clone trooper aboard the Negotiator in "Bound for Rescue". In 2018, the reference guide Star Wars: The Complete Visual Dictionary, New Edition formally identified the blaster. Its initial appearance was in the Star Wars Legends 2005 video game Star Wars: Republic Commando.