diff --git a/src/client/component/gameplay.cpp b/src/client/component/gameplay.cpp
index 061a9c19..31635184 100644
--- a/src/client/component/gameplay.cpp
+++ b/src/client/component/gameplay.cpp
@@ -14,6 +14,8 @@ namespace gameplay
 {
 	namespace
 	{
+		utils::hook::detour pm_weapon_use_ammo_hook;
+
 		game::dvar_t* jump_slowDownEnable;
 		game::dvar_t* jump_enableFallDamage;
 
@@ -53,6 +55,15 @@ namespace gameplay
 			}
 		}
 
+		void pm_weapon_use_ammo_stub(game::playerState_s* ps, game::Weapon weapon,
+			bool is_alternate, int amount, game::PlayerHandIndex hand)
+		{
+			if (!dvars::player_sustainAmmo->current.enabled)
+			{
+				pm_weapon_use_ammo_hook.invoke<void>(ps, weapon, is_alternate, amount, hand);
+			}
+		}
+
 		const auto pm_bouncing_stub_mp = utils::hook::assemble([](utils::hook::assembler& a)
 		{
 			const auto no_bounce = a.newLabel();
@@ -100,6 +111,10 @@ namespace gameplay
 	public:
 		void post_unpack() override
 		{
+			dvars::player_sustainAmmo = dvars::register_bool("player_sustainAmmo", false,
+				game::DVAR_FLAG_REPLICATED, "Firing weapon will not decrease clip ammo");
+			pm_weapon_use_ammo_hook.create(SELECT_VALUE(0x14042E380, 0x1401F6B90), &pm_weapon_use_ammo_stub);
+
 			if (game::environment::is_sp())
 			{
 				return;
diff --git a/src/client/game/dvars.cpp b/src/client/game/dvars.cpp
index 8f0c5dba..f46d7d5b 100644
--- a/src/client/game/dvars.cpp
+++ b/src/client/game/dvars.cpp
@@ -23,6 +23,7 @@ namespace dvars
 	game::dvar_t* con_inputCmdMatchColor = nullptr;
 	game::dvar_t* g_playerEjection = nullptr;
 	game::dvar_t* g_playerCollision = nullptr;
+	game::dvar_t* player_sustainAmmo = nullptr;
 
 	game::dvar_t* jump_enableFallDamage;
 
diff --git a/src/client/game/dvars.hpp b/src/client/game/dvars.hpp
index 34f6d714..24c4afb5 100644
--- a/src/client/game/dvars.hpp
+++ b/src/client/game/dvars.hpp
@@ -26,6 +26,7 @@ namespace dvars
 	extern game::dvar_t* con_inputCmdMatchColor;
 	extern game::dvar_t* g_playerEjection;
 	extern game::dvar_t* g_playerCollision;
+	extern game::dvar_t* player_sustainAmmo;
 
 	extern game::dvar_t* jump_enableFallDamage;
 
diff --git a/src/client/game/structs.hpp b/src/client/game/structs.hpp
index 9d1907c8..6fa0cf2f 100644
--- a/src/client/game/structs.hpp
+++ b/src/client/game/structs.hpp
@@ -1438,6 +1438,19 @@ namespace game
 		float halfSize[3];
 	};
 
+	enum PlayerHandIndex
+	{
+		WEAPON_HAND_DEFAULT = 0x0,
+		WEAPON_HAND_RIGHT = 0x0,
+		WEAPON_HAND_LEFT = 0x1,
+		NUM_WEAPON_HANDS = 0x2,
+	};
+
+	union Weapon
+	{
+		unsigned int data;
+	};
+
 	namespace mp
 	{
 		struct cachedSnapshot_t