SWAT 3: Close Quarters Battle (also known as SWAT3 or SWAT3:CQB) is a tactical squad-based first-person shooter, developed by Sierra Northwest and published by Sierra Entertainment for Windows-based PCs on November 23, 1999. It is the seventh installment of the long-running Police Quest and SWAT series.
This is an weapon mod by an unknown creator, It's a file that adds in several versions of the bullpup FN P90 Machine gun with silencers, lasers, or with scope zoom lenses. This file isn't by me nor do I take credit for it, This file came off the Swat 3 reunited website. Reuploaded here to get interest in the game again.