You need to apply Justifier patch for some of the game Those are included in the rlz zip.

Lightgun must be used in joystick mode, using guncon relative aiming

Outputs support either with a direct connection for Gun4IR or with MameHooker.

For Gun4IR recoil : go to controller settings, your guncon Port, Settings and you should see Gun4Ir Com port option For Mamehooker : Settings, General, Enable MameHooker checkbox (you need .NET 8 because i use a third party app to make it work)

Also added some No Flash Gun cheat that were not build in duckstation.

SLUS-00335 : Crypt Killer [Recoil support]

SLES-00445 : Die Hard Trilogy [Recoil support]

SLUS-00119 : Die Hard Trilogy [Recoil support]

SLUS-01015 : Die Hard Trilogy 2 - Viva Las Vegas (USA) [Recoil support]

SLUS-00654 : Elemental Gearbolt [Recoil support]

SLES-03990 : Extreme ghostbuster [Recoil support]

SCES-02543 : Ghoul Panic [Recoil support]

SLUS-00630 : Judge Dreed [Recoil support]

SLUS-00293 : Lethal enforcer [Recoil support]

SLES-00542 : Lethal enforcer [Recoil support]

SLUS-00503 : Maximum force [Recoil support]

SLES-02244 : Mighty Hits Special (Europe) (En,Fr,De)

SLES-03846 : Moorhen 3 - Chicken Chase

SLES-03278 : Moorhuhn 2 - Die Jagd Geht Weiter

SLES-04174 : Moorhuhn X (Germany)

SLUS-01354 : Point Blank 3 [Recoil support]

SLPM-86048 : Policenauts (Japan) (Disc 1) [Recoil support]

SLPM-86049 : Policenauts (Japan) (Disc 2) (Untested !)

SCUS-94408 : Project - Horned Owl (USA) [Recoil support]

HASH-2A8EE8AAA2279639 : Horned Owl (Japan) [Recoil support]

SCES-02569 : Rescue Shot (Europe)

SLES-02744 : Resident Evil - Survivor (France) (calibration target need to be shoot a little lower) [Recoil support]

SLES-02732 : Resident Evil - Survivor (Europe) (calibration target need to be shoot a little lower) [Recoil support]

SLUS-01087 : Resident Evil - Survivor (USA) [Recoil support]

SLPS-02474 : Simple 1500 Series Vol. 24 - The Gun Shooting (Japan) [Recoil support]

SLPM-86816 : Simple 1500 Series Vol. 63 - The Gun Shooting 2 (Japan)

SLUS-00405 : Time Crisis (USA) [Recoil support]

SLUS-00381 : Star Wars - Rebel Assault II - The Hidden Empire (USA) (Disc 1)

Also working (but didn't need a fix) :

SLUS-01398 Gunfighter - The Legend of Jesse James (USA) [Recoil support]

SLPS-01106 Guntu - Western Front June, 1944 - Tetsu no Kioku(Japan)

SLUS-00481 Point Blank 1 & 2 : [Recoil support] (Partial recoil support, when you have unlimited ammo, recoil is triggered for any trigger press)

Time Crisis - Project Titan (USA) [Recoil support]