Stargate SG-1 - Season 6
The following weapons were used in the sixth season of the television series Stargate SG-1:
The most common sidearm seen in used by the SG teams (although in real life, the M9 is the military designation for the Beretta, the prop weapons used in the show are most likely the civilian Beretta 92FS).
Used in the episode "Smoke and Mirrors" (Season 6, Episode 14) by one of Senator Kinsey's Secret Service Agents. It appears numerous times later on in the series as the standard-issue sidearm for NID agents.
Jack O'Neill uses a Walther P99 in "Sight Unseen" (Season 6, Episode 13).
One of the agents protecting Senator Kinsey in "Smoke and Mirrors" (Season 6, Episode 14) is seen with a Cobray M11/9.
FN P90 Personal Defence Weapon
The FN P90 became the most common weapon after its introduction in "The First Ones" (Season 4, Episode 8). In the episode that introduced it, O'Neill suggested the weapon because of its ammunitions better penetration, compared to the MP5. We can assume it was just a device in the script to bring this weapon into the fold, which is rare since there aren't that many series that actually bring up a weapon for the sake of the plot, which then stick around for the rest of the show. This is the weapon that comes to mind when anyone thinks of of the Stargate series.
The series probably picked this weapon for its futuristic look, because it is something unique compared to other weapons at the time and probably because the budget allowed for the expensive ammunition that comes with a P90, even blanks would cost a lot of money. Dan Shea, series stunt coordinator (1997-2007), has stated that one reason the P90 was chosen is that it ejects the empty brass straight down when firing; this allows positioning of actors in a scene without worrying where expended cartridges will be flying. In addition, the weapon is ambidextrous in design, so both right- or left-handed shooters can handle it without problem.
In a few episodes in the later seasons, Teal'c is seen dual wielding this SMG, probably because he was not trained in standard practices of Earth militaries. However, in Stargate: Continuum, Colonel Cameron Mitchell was also seen dual wielding P90s. Also seen once in the hands of Bra'tac and the Free Jaffa. Introduced to the Free Jaffa in Season 5 episode "The Warrior". Any subsequent episode with the free Jaffa, we see these in their hands over staff weapons.
Heckler & Koch MP5A3
The Heckler & Koch MP5A3, almost exclusively equipped with the Surefire dedicated forend weaponlight, small scopes and dual mag clamps, is the primary weapon used by all SG teams for the first few seasons. Then when the main cast and some supporting and extras switched to the P90, the MP5 became less common. Also seen in use by the Free Jaffa Nation later in the series. MP5 also makes a small comeback when we see them again in the hands of a special assault unit raiding a Trust compound. Throughout the series it is generally the case that for non firing scenes the actors carry airsoft replica MP5s with a Navy trigger group, whereas for firing scenes their weapons switch to real firearms with SEF trigger groups.
Diemaco C7/Olympic K4B
Seen used by Marines, and the security of Stargate Command. These are all Olympic Arms K4B rifles (same receiver style as the Colt Model 715/Diemaco C7), standing in for the M16A2.
GAU-5/A and GAU-5A/A
The GAU-5/A and GAU-5A/A were the USAF contract versions of the XM177 and XM177E2 "CAR-15" short assault rifle. The USAF Security forces used them until recently, however, most of the non firing GAU-5A/As seen in the show were simply XM177E2 "Airsoft guns". The actual GAU-5A/A carbines look like the XM177E2 but don't have forward Assist buttons.
The GAU-5 variants that appeared on the show seem to be a mix of full-auto converted Colt AR-15 SP1s and Olympic Arms K3Bs, all with chopped barrels and fake GAU-5 flash hiders installed. The converted AR-15 SP1s have the "slab-side" receiver, while the K3Bs are recognizable by their 715-style receiver (forward assist, brass deflector, A1-style rear sight) and "Stowaway" pistol grips.
Usually seen carried by the Cheyenne Mountain guards in stock footage.
One of the primary weapons utilized by the Stargate teams. During later seasons they are rarely seen without any attachments, mostly being equipped with flashlights, Cobray flare launchers and laser aiming modules. A small side note for the interested reader: The lower handguard on the M4 has to be removed in order to accommodate underbarrel grenade launchers like the M203 or, in this case, the Cobray 37mm Launcher.
Norinco Type 84S
Remington Model 700
In "Smoke and Mirrors" (Season 6, Episode 14), the gunman uses a Remington model 700 with a customized breakdown and scope to shoot Senator Kinsey. Contrary to what Barret claims in the episode, a Remington 700 could be purchased at just about any sporting goods store, and the collapsible stock would not have been difficult to acquire either.
Knight's Armament Revolver Rifle
In "Smoke and Mirrors" (Season 6, Episode 14), the gunman looks at a Knight's Armament Silent Revolver Rifle at the arms dealer's warehouse. It is built around a .44 Magnum Super Redhawk revolver.
Used by the Russian SG team in "Metamorphosis" (Season 6, Episode 16).
These two guns were set up in the gate room but were never used in the 10 years the show ran for. The M2 was also used at the Alpha Site in "Allegiance" (Season 6, Episode 9).
Daewoo K3 (mocked up as M249)
Contrary to popular belief, there are no real FN Minimi or M249 light machine guns used in Stargate: SG1 or its sister show, Stargate: Atlantis. The light machine guns used by the SG teams are actually Korean-made Daewoo K3s that have been fitted with M249 Paratrooper-style stocks and shortened barrels. Some of the K3s seen on the show also have RIS rails and vertical grips similar to those seen on the Mk 46 Mod 0.
Seen used by a NID Special Operation member in the episode "Nightwalkers".
PKM Machine Gun
Seen utilized by the Russian SG team in "Metamorphosis" (Season 6, Episode 16).
Seen briefly in "Shadow Play" (Season 6, Episode 7).
USAS-12 Assault Shotgun
The USAS-12 shotguns in SG1 are newer CQ versions with a modified carry handle, no front sight and shortened barrel (sometimes with a muzzle brake). The weapon is appearing on very few occasions in Season 6, usually relegated to be used by background extras.
Cobray CM203 Flare Launcher
Seen attached to M4s and M16s. Prop wise, these were all Cobray 37mm flare launchers meant to mimic the appearance of an M203. What tips them off is the absence of a second trigger, the shape of the trigger guard, the lack of a step up in the receiver, and the cocking lever on the SIDE of the receiver.
A FIM-43 Redeye is seen in "Full Circle" (Season 6, Episode 22).
Seen used by the people of Abydos and Teal'c in "Full Circle" (Season 6, Episode 22).