Several highly modified real-life weapons can be seen in the armory.
Several highly modified real-life weapons can be seen in the armory.
[[Image:DOOM-Armory1.jpg|thumb|none|600px|]]
[[Image:DOOM-Armory1.jpg|thumb|none|600px|]]
[[Image:DOOM-Armory2.jpg|thumb|none|600px|A SPAS-12, one H&K G36C, and what appears to be an Arctic Warfare sniper rifle.]]
[[Image:DOOM-Armory2.jpg|thumb|none|600px|A [[SPAS-12]], one [[G36C|H&K G36C]], and what appears to be an [[Accuracy International Arctic Warfare series|Arctic Warfare sniper rifle]].]]
[[Image:DOOM-Armory3.jpg|thumb|none|600px|]]
[[Image:DOOM-Armory3.jpg|thumb|none|600px|]]
[[Image:DOOM-Armory4.jpg|thumb|none|600px|A modified G3A3 (down), a G36 rifle and an MP5 (top), a SPAS-12 with scope and several other weapons.]]
[[Image:DOOM-Armory4.jpg|thumb|none|600px|A modified [[G3A3]] (down), a G36 rifle and an [[MP5]] (top), a SPAS-12 with scope and several other weapons.]]
The Heckler & Koch G36 visually modified is the futuristic rifle carried by Sarge (Dwayne Johnson), Reaper (Karl Urban), Portman (Richard Brake) , and Duke (Razaaq Adoti). The stocks used are most likely derived from the G36KV stock. According to the ammo counters, the beefed-up box magazines are supposed to hold 65 rounds.
Some of the marine's including Mac (Yao Chin), Duke (Razaaq Adoti) and Reaper (Karl Urban) use H&K USP handguns with stainless-steel barrels as their sidearms. It is most notably seen when Mac hands one to Pinky (Dexter Fletcher) for protection.
Sarge's (Dwayne Johnson) sidearm is an IMI Desert Eagle Mark XIX. He most notably uses it to kill a mutated Dr. Carmack. His gun is quite clearly the .44 Magnum version, as evidenced by the fluted barrel in the screenshot below.
The Bio Force Gun, adapted from the game's BFG 9000, also makes an appearance in the movie. Like the game, it's the most destructive weapon used. It is wielded by Sarge (Dwayne Johnson). There were two working (vibrating) props of The Bio Force Gun, built from scratch out of resin and fiberglass.
During pre-production training, the actors were taught firearms handling maintenance and one of the training guns used was a SA Vz.58 assault rifle. One can see these weapons by watching the bonus content of the Doom DVD.