I Declare War is a 2012 Canadian action/fantasy directed by Jason Lapeyre and Robert Wilson. Although the film's entire cast is made up of pre-teens, all of the guns fired onscreen were real, which were only imaginary to the film's characters.
The following weapons were used in the film I Declare War:
Quinn (Aidan Gouveia) is armed with an M1911A1.
Pre-War Colt M1911A1 Pistol - Commercial Model known as the "Colt Government Model" - .45 ACP
Quinn chambers a round into his M1911A1.
Quinn takes aim at Paul (Siam Yu).
What Quinn's M1911 actually looks like.
P.K. (Gage Munroe) is armed with a nickel-plated Beretta 92FS, although it's quite possible this is a blank-firing replica like a Reck Miami 92F.
Reck Miami 92F, nickel finish - 9mm P.A.K. blanks
P.K. returns fire during the ambush.
P.K. fires while running for cover.
P.K. holds his pistol to Sikorski's (Dyson Fyke) head.
A technical advisor gives Gage Munroe some pointers.
Skinner (Michael Friend) is initially armed with an Uzi.
IMI Uzi with buttstock collapsed - 9x19mm
Sawn-off Double Barreled Shotgun
Joker (Spencer Howes) is armed with a Sawn-off Double Barreled Shotgun. Frost (Alex Cardillo) briefly takes it away from him.
Stevens 311R (sawed-off) - 12 gauge
Joker takes aim with his shotgun.
Frost shoots Wesley (Andy Reid) with Joker's shotgun.
Joker disassembles his shotgun back at his base.
Spencer Howes fires the second of this two barrels. Remarkably, he has kept his eyes open. Note the crew members covering their ears.
Paul (Siam Yu) is armed with an AKS-47.
Type III AKS-47 with stock folded - 7.62x39mm
Paul with his AKS-47. It's a bit hard to see, but the machined receiver can be seen, as well as the open-typed front sight.
What Paul's AKS-47 actually looks like.
Kenney (Eric Hanson) and Scott (Alex Wall) are armed with M4A1s.
Colt M4A1 with 4 position collapsible stock, RIS foregrip, folding rear sight, and ACOG scope - 5.56x45mm
M4A1 carbine 5.56x45mm with M203A1 grenade launcher 40mm
Scott fires his M4A1. Note the BFA in the barrel and the shell casing being ejected.
The BFA is visible here as well.
It looks like not all of the gun safety training took. (See below)
Stunt coordinator John Stead teaches the kids about gun safety during their "boot camp," which seems to have taken place at a public park.
SIG SG 552
Sikorski (Dyson Fyke) and Frost (Alex Cardillo) are armed with short-barrelled SIG SG 552s with pronged flash hiders and standard diopter sights. Dyson Fyke correctly identifies them as such during a making-of featurette.
SIG SG 552 with scope rail attached - 5.56x45mm
An SG 552 is aimed at Paul.
Frost and Sikorski with their SG 552s.
Frost opens up with his SG 552. He reacts accordingly.
A closeup of Sikorski's SG 552. The rail is clearly seen here.
What Sikorski's SG 552 actually looks like.
Wesley (Andy Reid), who was new to the game, finally uses his imagination and turns his broken air gun into a Lee-Speed Sporter.
Wesley's new rifle. He never does pick it up though.
Wesley's broken air gun prior to its "transformation."
Wesley with his broken air gun. Unlike the other kids, who imagine their makeshift guns as real weapons, he carries this broken air gun for much of the film.
Frost finds a log and imagines it as an M136 AT4.
M136 AT4 Anti-Tank recoilless launcher - 84mm
The AT4 next to Sikorski.
Frost fires the AT4. In his reality, however, the AT4 is reusable rather than a single shot weapon.
Frost with the log before he imagines it as an AT4.
The AT4 at "boot camp," showing off its instructions.
Browning M2 Aircraft
Wesley imagines a mocked up mounted weapon as a tricked out Browning M2 Aircraft.
Browning M2 Aircraft, Flexible - .50 BMG
Wesley with the tricked out M2 Aircraft. The size of the bullets and the charging handle design would indicate that this is a .50 caliber M2 rather than an M1919 or an A/N M2.
The makeshift mounted weapon before it turned into an M2 Aircraft.
M67 hand grenade
P.K. tosses an M67 hand grenade, which Frost catches and tosses back.
M67 fragmentation grenade
Jess (Mackenzie Munro) uses a crossbow throughout the film.
Jess has Sikorski hold her crossbow.
It's revealed that Jess' crossbow is actually just a slingshot.