The following weapons were used in the film Outside the Wire:
Pistols
Grand Power P1
A Grand Power P1 is used by civilians and Krasni rebels, and also become the personal sidearm of Leo, replacing the Glock in a continuity error.
Unidentified Glock pistol
An unidentified model of a Glock is used by Leo during an assault on a Krasni-controlled bank.
Submachine Guns
Steyr TMP
A Steyr TMP is the personal sidearm of Kovac before being taken by Leo.
Assault rifles
AK-12
What appears to be an AK-12 is used by both Resistance and Krasni soldiers. While the usage of such gun may be a realistic choice in such scenario, is unlikely that would be available to Western armories and is likely a mock-up or a kit.
Arsenal SLR-107
Some Arsenal SLR-107UR are used by soldiers of both the Resistance and Krasni.
Heckler & Koch G36A1.1
A Heckler & Koch G36A1.1 fitted with a IZF stock and loaded with explosive bullets is used by a Krazni sniper and later Harp.
M4A1
The US Marines use M4A1s fitted with Trijicon ACOG sights and AN-PEQ-IR2 as their standard weapons while Leo and Harp use them to assault the Krasni controlled bank. Is also handled by a Resistance member in the safehouse.
Noveske N4
What appear to be a Noveske N4 fitted with a Trijicon ACOG and a AN-PEQ-IR2 is used by Leo.
Machine guns
Mk. 46 Mod. 0
What looks like a Mk. 46 Mod. 0 is used by US Marines "Grumps".
Browning M2
A Browning M2 is mounted on one of the US Marines convoy.