A Certain Scientific Railgun T
The following weapons were used in the anime series A Certain Scientific Railgun T:
What vaguely resembles a Beretta 92F is used by SCHOOL agents sent to kidnap Ruiko Saten in broad daylight in "Strange Coincidence".
A Glock-type pistol is drawn out by a mercenary in "Kozaku Mitori" while conducting close protection detail for Gensei Kihara. Another is used in "Clone Dolly" and "Joining the Battle" by Keitz Nokleban.
The details of the pistol were not revealed/not made very clear.
A M1911A1 with wooden hand grips is with the unnamed Chief of the Total Human Cyborg Replacement Project in "My Dear Friends".
A Starter pistol is seen in "The Daihasei Festival".
The FN SCAR-H appears to be with Academy City security forces when they detain Mitori in "Promise".
Remington Model 870
A short Remington Model 870 with a pistol grip appears in "Kozaku Mitori" with mercenaries recruited to protect Gensei Kihara.
Remington Model 700
The Remington Model 700 is seen in "Ha det Bra" when Frenda imagines the kind of hunter she's confronting.
Sleeve guns are used by SCHOOL master shooter Yumiya Rakko as her personal weapon, built from sniper rifle parts inside her combat suit. The gun on her left is used for intermediate range and the gun on her right is used for short range.