The Generation 2 Glock 17 is prominently featured in the film. ATF Agent Joseph Keenan (John Goodman), ATF Agent Harry (Kevin Alejandro), the ATF Sniper (Marc Blucas) and other agents carry Glock 17s. Sara (Melissa Leo) uses a Glock 17 to kill the ATF Sniper and then she gives the pistol to Cheyenne (Kerry Bishé), who uses it to threaten Randy.
The ATF Sniper (Marc Blucas) carries a Smith & Wesson Model 34 revolver as his secondary weapon. He empties the Model 34 and tries to give it to Cheyenne, however he gets killed before he could do it.
A female Believer holds a Heckler & Koch MP5KN (MP5K with Navy trigger group) submachine gun when the last remaining Believers gather together at the basement of the church. This gun is never fired in the film.
ATF agents are using either M4A1 Carbines or MP5A3 submachine guns in the film. At least one ATF Agent is seen with an M4A1 fitted with an Aimpoint sight. The ATF agent's M4A1 who captures Cheyenne (Marc Blucas), is fitted with a telescope (credited as "ATF Sniper"). Mordechai (James Parks) also uses an M4A1 when he and his wife, Esther (Jennifer Schwalbach Smith - who is the director Kevin Smith's wife) go to the roof to hold back the ATF agents storming the church.
When Travis (Michael Angarano) escapes from the basement, he hides in the armory and takes out a Classic Army M15A4 airsoft rifle (which is a replica of the M4A1 Carbine). It is recognizable by the white "ArmaLite" logo and the white-painted fire position markings on the lower receivers (which no real AR-15 manufacturer uses).
Error creating thumbnail: File missingClassic Army M15A4 airsoft carbineError creating thumbnail: File missingTravis slowly advances forward in the basement of the church.Error creating thumbnail: File missingThis good close-up shows the ArmaLite logo, giving away that the gun is just an airsoft rifle. He wouldn't do much damage with the selector on safe also. (It should be noted that not all airsoft manufacturers use white fire position markers on their rifles, the more expensive airsoft M4's have the correct, real-life selectors.)Error creating thumbnail: File missingTravis looks around, desperately trying to find a way out of the church.
When Mordechai and his wife grab more weaponry from the armory, Esther (Jennifer Schwalbach Smith) is seen picking up a (possibly non-firing) AK-47. Her AK changes into a Type 56 when she actually fires in on the roof. An AK-47 is also seen on the cover/poster of the film.
The Believers keep a massive amount of small arms in their basement. Numerous MP5A2s (with both S-E-F and Navy trigger packs), an Over And Under shotgun, a Ruger Mini-14 and various AK-type guns, hunting rifles and pump-action shotguns can be seen in the room.
