The M41 Mark 2 Plasma Pulse Rifle with Concussion Grenade Launcher is a special weapon of the ISA for use on spaceborne vehicles.
- The M41 Mark 2 Plasma Pulse Rifle is an obvious reference to the M41A Pulse Rifle from the 1986 film Aliens. The two-part episode the weapon appears in, "Space Race", contains numerous references to the movie.
- The M41's ion pulse in "stun" mode can stop a man's heart, as proven when Archer fires the rifle at Cyril and Pam.
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