The following weapons were used in the tenth season of the television series Stargate SG-1 and the straight-to-DVD movies The Ark of Truth and Continuum:
A Glock 17 is used by rogue NID agents in "Memento Mori" (S10E08).
Jericho 941 R
In "200" (S10E06), Mitchell imagines himself fighting zombies. When he was doing his last stand backing towards the activating gate, he took out a two tone Jericho 941 R or the "Baby Eagle", as director Martin Wood refers to Mitchell's handgun correctly in the DVD commentary.
The Vektor CP1 can be seen during the episode "Company of Thieves" (S10E09) in the hands of Anateo (Rudolf Martin), Netan (Eric Steinberg) and another Lucian Alliance soldier.
Enfield No.2
The Captain of the Achilles retrieves a Enfield No.2 when he hears a strange noise from the ships hold.
Submachine Guns
Beretta PM12S
A number of Beretta PM12S submachine guns are seen used in "Bad Guys" (S10E16) as the Scorpion by security guards and the police of that planet. One was also taken by Teal'c so he can dual wield it.
FN P90 Personal Defence Weapon
The FN P90 continues so serve as the primary weapon of the SG-1 team.
Members of The Trust in "Memento Mori" (S10E08) are seen using Heckler & Koch MP5Ks.
H&K MP7
In "200" (S10E06), Mitchell imnagines himself dual wielding MP7s with the sights folded and extended magazines while fending off zombies.
Kimel AP-9
The Kimel AP-9 can be seen in "Company of Thieves" (S10E09) and "Bounty" (S10E15) as one of the primary weapons of Lucian Alliance infantry.
M1 Thompson
The M1 Thompson is used by Mitchell (Ben Browder) in the movie Stargate: Continuum, as noted by the cheap rear sights and side mounted bolt, but Mitchell went back in time and used this gun in 1939, 3 years before the M1 model was introduced. Presumably it is standing in for the period-accurate M928 model
Sa vz. 61 Skorpion
Alien museum security personnel use Skorpions in "Bad Guys" (S10E16).
Shotguns
New Haven Model 600AT
In "Uninvited" (S10E05), General Landry (Beau Bridges) and Mitchell are seen carrying New Haven Model 600AT pump action shotguns. General Landry's shotgun has a 28" ribbed barrel.
USAS-12 Assault Shotgun
The USAS-12 is used by security personnel on board the Odyssey.
A hunter in "Uninvited" (S10E05) is seen with a Remington 7600.
Savage Mk.IIG
Darrell's rifle in "Bounty" (S10E15) is a Savage Mk.IIG or some variation thereof.
Rossi Model 62 SA
While Vala and Darrell are shooting tin cans in "Bounty" (S10E15), Vala (Claudia Black) uses a Rossi Model 62 SA pump action rifle.
Assault Rifles
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.
Heckler & Koch G36K
The G36KE is used by various personel, and both the "K" version with the scope and the export "KE" version lacking the scope are seen.
M16A1
Usually seen carried by the Cheyenne Mountain guards in stock footage.
M4A1
One of the primary weapons utilized by the Stargate teams. is the M4A1 carbine. often with various accessories
Norinco Type 84S
In Stargate: Continuum, Cameron Mitchell uses a Norinco Type 84 taken from a Russian soldier.
Machine Guns
Browning M2
A pair of Browning M2s were set up in the gate room, but were never used in the 10 years the show ran. An M2 was only used in combat once, offworld in Season 3
FN M240
Used in the straight-to-DVD movie Stargate: The Ark of Truth.
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.
M60E3
A Marine on SG-3 carries a M60E3 in "Uninvited" (S10E05).
Heavy Weapons
Cobray CM203 Flare Launcher
The Cobray CM203, mounted on M16s and M4s, is used by SG teams,
Grenades
M67 fragmentation grenade
Utilized by the SG teams.
Flashbang
Used most prominently in "Insiders" (S10E04) to take out the guards of one of Ba'al's clones.