The original article was at SIG MPX. The list of authors can be seen in the page history.
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- "Close to mid-range 9mm submachine gun, medium to high penetration."
— In-game description
The SIG MPX is a gas-operated submachine gun primarily chambered in 9×19mm. It is the first submachine gun to feature a fully closed and rotating bolt and piston system.
In-game, the MPX is similar to the MP5, but it sacrifices damage and a bit of recoil control for a higher rate of fire. Marginally better in close-range engagements, the MPX is a Jack-of-all-Trades submachine gun.