Although the kit is titled the "Stryfe CS-18 Mission Kit", the Stryfe itself does not have a number code.
Oddly enough, the Stryfe is referred to as "CS" instead of "ECS". Usually, a blaster with CS in its name is a manual, spring-action blaster, while blasters with "ECS" in their name are battery operated and motorized.
It is one of few N-Strike Elite Mission Kits without a model posing with it on the front.
The kit fully assembled/The included contents of the Stryfe CS-18 Mission Kit.