A Colt M1911A1 is used by Jimmy Barnes (John Pankow) after being cornered near the end of "Pilot". A stainless version is seen with Mazikeen near the end of "Lucifer, Stay. Good Devil". Renny (Trach Grant) opens fire at Lucifer with it near the end of "Favorite Son". The stainless version is seen in flashbacks in "Et Tu, Doctor?"
Colt Mustang II
A Colt Mustang II was seen in "Take Me Back to Hell" when Malcolm forces Chloe to disarm herself.
Glock 17
A Glock 17 with and without a stainless steel slide by some of 2 Vile's men in "Pilot". Some of the Latin King gangsters use them in "Sweet Kicks". It's also used by LAPD Detective Dan Espinoza (Kevin Alejandro) and Malcolm Graham (Kevin Rankin) as their main sidearm. The FBI uses it as their main sidearm.
Glock 19
A Glock 19 is seen used by Detective Chloe Decker near the end of "Lucifer, Stay. Good Devil", serving as her main sidearm.
IMI Desert Eagle
An IMI Desert Eagle is used by one of Tommy's men in "Take Me Back to Hell".
Kimar Lady K
A Kimar Lady K is used by Carver Cruz (Christopher Marquette) in "Manly Whatnots" (S1E04).
Ruger KP90
A Ruger KP90 is used by a LA gangster in "Sweet Kicks".
A Smith & Wesson 3913 is used by Carver Cruz in "Manly Whatnots" after being previously disarmed by Chloe.
STI Edge
What appears to be an STI Edge was used by Dani Ramirez (Alyssa Diaz) in "Sweet Kicks" (S1E05).
Taurus PT911
A Taurus PT911 is used by Eddy Deacon (Jeff Staron) in a drive-by shooting in "Pilot".
Revolvers
Smith & Wesson Model 36
A stainless Smith & Wesson Model 36 is used by Lindsay Jolson (Bailey Noble) near the end of "Manly Whatnots".
Smith & Wesson Model 60
A stainless Smith & Wesson Model 60 was found discarded by the LAPD in "Sweet Kicks", which is possibly taken from a detained LA gangster. It's also used by Vanessa Dunlear (Christina Chang) to shoot Lucifer in the chest in "St. Lucifer".
Smith & Wesson Model 67
A Smith & Wesson Model 67 appears to be seen in "A Priest Walks into a Bar" after Dan steals it from the LAPD evidence room, using it as his weapon to kill Lucifer.
Submachine Guns
Heckler & Koch MP5A3
A Heckler & Koch MP5A3 with a picatinny railing is used by one of Tommy's men in "Take Me Back to Hell".
Heckler & Koch MP7A1
A Heckler & Koch MP7A1 is seen with a FBI agent during a raid in "Wingman".
Shotguns
Ithaca Model 37
An Ithaca Model 37 was briefly used in "Take Me Back to Hell" by Mel Graham (Heather Tom).
Remington 870
A Remington 870 is seen with the corpse of Paolucci near the end of "Et Tu, Doctor?"