This is the real gunshot mod for Return to Castle Wolfenstein, created by Saxon, which has been fixed and updated by GlitchyJoe from ModDB. Here's what he had to say about this update:
Saxon's (all credit to him) mod was incorrectly made and not maintained. He must have used a 7zip file and renamed the extention to .pk3 from .7z This is incorrect. You must take an existing .pk3 file, empty it and then mod it's insides as you desire or simply rename a zip file to pk3.

About the Mod: Real weapon sounds pack for Return to Castle Wolfenstein. The audio in this pack replaces most of the default weapon sounds for RtCW, including the default reload sounds.
Weapon sounds included are: Colt 1911, FG42, M1 Carbine silenced Snooper Rifle, Luger P08, Mauser K98 (yeah I know, technically the in-game model is a Garand but whatever),  MG42, MP40, Silenced Sten, Thompson, Venom (sounds were pulled from an MG42, because this gun is fake)

I've also included some proper German voices which are unused sounds from Condition Zero. It's kind of nice to hear proper German in-game! Sadly I haven't been able to replace the scripted voices.

Please do not re-use these sounds without permission.

Installation: Just place the .pk3 file in the main folder of Return to Castle Wolfenstein.

Source: wolffiles.de | GlitchyJoe - moddb.com/realistic-sound-mod | Saxon - moddb.com/real-gunshots-pack-for-rtcw

	REALITIC GUNSHOT SOUND MOD Version:1.0  Saxon + GlitchyJoe  10.02.2018  4,357 MB  1262

Return to Castle Wolfenstein RealRtCW version 2.21

WolfETPlayer's "RealRtCW" modification for "Return to Castle Wolfenstein" is far more than just a basic improvement on the original game, it is, in fact, a total overhaul of everything. From textures to weapons, to the combat abilities of the A.I., it has all been very much improved. Having a quick read of the mod's features list only serves to emphasise that fact.

Features list:
    Based on ioRTCW engine, which provides widescreen support, better sounds and x64 support
    New weapons: TT33, MP34, PPSH, Mosin Nagant, M1 Garand, BAR, MP44, MG42, G43, M97, Revolver
    New models for the vanilla weapons, including world models
    Rebalanced weapons characteristics
    Rebalanced AI
    Overhauled sounds
    New HUD and UI
    New difficulty system
    And more!

This new version has even more to enjoy too, with the superb "RtCW Vendetta" mission, created by Yo$hik, now included in the "RealRtCW" addons list.
New features:
cg_fixedaspectfov CVAR added
Various engine limits increased
Bug Fixes:
Flamethrower volume decreased
Luger silencer placement fixed
Balancing:
Player sprint duration doubled
Ammount of stamina taken by jumping decreased
Bunny hop value slightly increased to avoid silly first person effect
Pistols and SMGs spread decreased
Elite guards moving speed slightly increased
Undead enemies moving speed slightly increased
Other:
sv_cheats set to 0 by default
Weapon damage CVARS are now cheat protected
Various weapon screen position changed
No gloves hand skin removed due to its ugliness

Source: moddb.com/realrtcw | wolffiles.de

	REALRTCW Version:2.21  WolfETPlayer  03.06.2018  366 MB  1667

	HD-PACK (REALRTCW) Version:2.2   WolfETPlayer  27.12.2017  830 MB  2025

Return to Castle Wolfenstein - SatanClaus Coop Christmas Mod

This is a super-fun Christmas Mod for Return to Castle Wolfenstein and RtCW Cooperative Mod, created by Yo$hik. Lopers in antlers, smoking snowmen, Santa hats, Christmas present health packs and lots of Christmas trees, all adding to the festive fun :) .

Source - Yo$hik | wolffiles.de

	SATANCLAUS - COOP XMAS MOD Version:v1  Yo$hik  17.12.2017  40,19 MB  547

Another new update of Hellbaron's superb "Return to Castle Wolfenstein" modification, RtCW Venom 5.5 is now available for download.

Changelog:
# New textures and effects for both singleplayer and multiplayer.
# Some texture issues on weapons, walls and windows have now been fixed.
# Added the optional Thompson submachine gun model from E3 2001.
# Many other new improvements and optimisations.

Source: moddb.com/rtcw-venom-mod | ronboyproductions | wolffiles.de

	RTCW SP VENOM MOD Version:5.5  HEllBaron89  15.07.2018  550.93 MB  545

	RTCW SP VENOM MOD NVIDIA Version:5.5  HEllBaron89  15.07.2018  550.83 MB  485

Return to Castle Wolfenstein Singleplayer Venom Mod 1.5 by HEllBaron89

The goal of this little modification is increase the general feeling of the game with a more aggressive and modern IA of enemies and the best graphic possible for the original game, with HD texture for some weapons and enemies.

- New model Mg42 (ported from Wolfenstein: Enemy Territory) - I think was perfect to replace the old model mg42 of RTCW; this still a lowpoly model, but realistic. My wish is improve the ejecting shells effect of the multiplayer and W: ET, very nice and realistic, in the SP version all shells fall down like nails on the wood.. I hope it will be included in the future versions of IORTCW!

Installation:
Copy all the content of the package like it's on your RTCW installation folder. The cfg. file is facoltative, but increase the graphic quality to max possible for the engine. (is necessary the game patched to 1.41 to apply the wide patch and extreme quality cfg file!!)

Source: moddb.com/rtcw-venom | etpro.de | HEllBaron89

	RTCW SP VENOM MOD (HD TEXTURES) Version:1.5  HEllBaron89  18.01.2015  115 MB  611

This is a new patch from TITEUF85 for the English version of his superb Return to Castle Wolfenstein modification, "The Dark Army"

A new version (1.1) of The Dark Army: Uprising's English (US) edition was released as a Christmas gift to all fans of both the modification and the original game. If you already own the previous version of the mod, no need to worry, just click on the left button to download the patch to upgrade it.

Une nouvelle version (1.1) de l'édition en Anglais (US) de The Dark Army: Uprising est arrivée telle un cadeau de Noël à tous les fans du mod mais aussi du jeu original. Si vous possédez déjà la version précédente du mod, nul besoin de paniquer, cliquez juste sur le bouton gauche pour télécharger le patch afin de procéder à la mise à niveau.

Source: Titeuf-85 / Wolfenstein France via FB | moddb.com/tda | ronboyproductions | wolffiles.de

	THE DARK ARMY - UPRISING PATCH Version:1.1  Titeuf-85  31.12.2016  202.64 MB  870

An excellent retexture pack for Return to Castle Wolfenstein, created by Eugeny. His new textures are far superior to those of the original game and serve to create, not just better in-game visuals, but an even better atmosphere in a more realistic environment.

Eugeny's website

Source: Splashdamage - more screenshots & info | wolffiles.de

	RtCW RETEXTURE PACK Version:ALPHA 0.23  Eugeny  31.07.2013  93,48 MB  538

RtCWCoOp 0.9.5 Patch 1 - small update for latest version

- fixes some spectator issues
- and fixes the bug where you couldnt drown or fall to your death

Just unzip and overwrite the existing files.

 Source: rtcwcoop.com

	RTCW COOP PATCH Version:0.9.5.1  team bzzwolfsp  27.07.2013  1,315 MB  439

After 2 years of work and more than 850 svn revisions it is finally ready. The first public playable version of return to castle wolfenstine mod makes cooperative play possible - All single player levels are modified for cooperative play (up to 8 players). We added extra enemies, updated the skill levels so that its still a challenge to play this game.

There are three gametypes:
- Coop: Normal rtcw but in cooperative mode, very fun with friends. - Battle : sort of 1vs1 but still in coop. The point of this mode is that at the end of the map you have the best statistics (out of three). The recorded statistics are: damage given / damage received ratio, deaths and points. The player who scores the highest on at least 2 of the three wins. Important to know, you start the game with only one gun and you have to buy weapons, ammo and health. Buying something costs points. Your points can be below zero, but if you are at below zero at the end of the map you can't win - Speedrun: Play a level as fast as possible, fastest time is saved on the server

Download the files. Extract them somewhere (NOT in the rtcw folder). Copy the RTCW pk3's (mp, sp and pak0) into the rtcwcoop main folder and start the rtcwcoop executable.

Nach 2 Jahren Arbeit und mehr als 850 svn Änderungen ist es endlich fertig. Die erste öffentliche spielbare Version von der Return to Castle Wolfenstein Mod macht jetzt kooperatives Spielen möglich - Alle Einzelspieler-Level sind für kooperatives Spielen (bis zu 8 Spieler) modifiziert. Wir haben zusätzliche Gegner und den Schwierigkeitsgrad erhöht, so dass es immer noch eine Herausforderung ist dieses Spiel (erneut) zu spielen.

Downloade die Dateien. Entpacke es irgendwo hin (NICHT in den RTCW Ordner). Kopiere deine RTCW-pk3´s (mp, sp und pak0) in den rtcwcoop Hauptordner und starte die rtcwcoop.exe

Quelle: wolffiles.de

Return to Castle Wolfenstein Singleplayer Venom Mod by HEllBaron89

The goal of this little modification is increase the general feeling of the game with a more aggressive and modern IA of enemies and the best graphic possible for the original game, with HD texture for some weapons and enemies.

Installation:
Copy all the content of the package like it's on your RTCW installation folder. The cfg. file is facoltative, but increase the graphic quality to max possible for the engine. (is necessary the game patched to 1.41 to apply the wide patch and extreme quality cfg file!!)

Source: moddb.com/rtcw-venom | etpro.de

	RTCW SP VENOM MOD (HD TEXTURES) Version:1.0  HEllBaron89  15.12.2014  36,74 MB  659