The primary weapon of the Bureau 713's commandos is the M4 Carbine, outfitted with RIS rails, a flashlight and laser, usually fitted with an Elcan Optical sight on the receiver's flat top and an unusual custom sci-fi designator on the foreward grip top rail.
Set up like 'smart guns' from films like Aliens and Congo the miniguns are set to fire at anything moving within 50 feet (since past 50 feet are another barrier and past that are the trip wire mines). Unfortunately, the Zeno creatures phase in and out of our dimension so they're hard to hit.
Error creating thumbnail: File missingSeen in a closeup during the museum battle, this is a 2nd unit shot of a hand firing a Beretta Inox. Unfortunately it is intercut with a sequence of Aline Cedrac (Tara Reid) firing her Glock, so it is a continuity break.Error creating thumbnail: File missingCmdr. Richard Burke (Stephen Dorff) uses the Stainless Steel Beretta Inox as his primary sidearm.
Calico M-951A Automatic Rifle
Mixed in with the M4 Carbines of the Bureau 713 commandos are a number of Calico M-951A Full auto rifles (not the 955A since these rifles have full length barrels). These 951A rifles are outfitted with M900S Full buttstocks (an easy swap out). They have Calico style scope mounts and short optical scopes as well as Flashlights, foregrips and the same custom IR designator as seen on the M4 Carbines.