- "A 5.8x42mm assault rifle that hits hard and doesn't ask questions. In the right hands, this rifle can win almost any engagement."
- — In-game description
The JAK Nightshade Rifle Kit is a conversion kit for the DG-58 LSW light machine gun featured in Call of Duty: Modern Warfare III as part of the Aftermarket Parts system.
The Nightshade Kit increases fire-rate, mobility, and accuracy from the hip in exchange for base damage, range, and magazine capacity - however, it does have a unique trait in that the kit adds an additional four-shot-kill maximum range, making it more effective in close range.