diff --git a/src/server/cstrike/ammo.c b/src/server/cstrike/ammo.c
new file mode 100644
index 00000000..17a72b03
--- /dev/null
+++ b/src/server/cstrike/ammo.c
@@ -0,0 +1,273 @@
+/*
+ * Copyright (c) 2016-2020 Marco Hladik <marco@icculus.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* Ammo information courtesy of https://wiki.alliedmods.net/CS_weapons_information */
+
+enum
+{
+	CALIBER_NONE,
+	CALIBER_50AE,
+	CALIBER_762MM,
+	CALIBER_556MM,
+	CALIBER_556MMBOX,
+	CALIBER_338MAG,
+	CALIBER_9MM,
+	CALIBER_BUCKSHOT,
+	CALIBER_45ACP,
+	CALIBER_357SIG,
+	CALIBER_57MM
+};
+
+typedef struct
+{
+	int a_size;
+	int a_max;
+	int price;
+} ammoinfo_t;
+
+ammoinfo_t cs_ammoinfo[11] = {
+	/* CALIBER_NONE */
+	{
+		.a_size = 0,
+		.a_max = 0,
+		.price = 0
+	},
+	/* CALIBER_50AE */
+	{
+		.a_size = 7,
+		.a_max = 35,
+		.price = 40
+	},
+	/* CALIBER_762MM */
+	{
+		.a_size = 30,
+		.a_max = 90,
+		.price = 80
+	},
+	/* CALIBER_556MM */
+	{
+		.a_size = 30,
+		.a_max = 90,
+		.price = 60
+	},
+	/* CALIBER_556MMBOX */
+	{
+		.a_size = 30,
+		.a_max = 200,
+		.price = 60
+	},
+	/* CALIBER_338MAG */
+	{
+		.a_size = 10,
+		.a_max = 30,
+		.price = 125
+	},
+	/* CALIBER_9MM */
+	{
+		.a_size = 30,
+		.a_max = 150,
+		.price = 20
+	},
+	/* CALIBER_BUCKSHOT */
+	{
+		.a_size = 8,
+		.a_max = 32,
+		.price = 65
+	},
+	/* CALIBER_45ACP */
+	{
+		.a_size = 12,
+		.a_max = 100,
+		.price = 25
+	},
+	/* CALIBER_357SIG */
+	{
+		.a_size = 13,
+		.a_max = 52,
+		.price = 50
+	},
+	/* CALIBER_57MM */
+	{
+		.a_size = 50,
+		.a_max = 100,
+		.price = 50
+	}
+};
+
+void
+Ammo_BuyCaliber(player pl, int cal)
+{
+	int *ptr_ammo;
+	while (pl.money - cs_ammoinfo[cal].price > 0) {
+		switch (cal) {
+		case CALIBER_50AE:
+			ptr_ammo = &pl.ammo_50ae;
+			break;
+		case CALIBER_762MM:
+			ptr_ammo = &pl.ammo_762mm;
+			break;
+		case CALIBER_556MM:
+			ptr_ammo = &pl.ammo_556mm;
+			break;
+		case CALIBER_556MMBOX:
+			ptr_ammo = &pl.ammo_556mmbox;
+			break;
+		case CALIBER_338MAG:
+			ptr_ammo = &pl.ammo_338mag;
+			break;
+		case CALIBER_9MM:
+			ptr_ammo = &pl.ammo_9mm;
+			break;
+		case CALIBER_BUCKSHOT:
+			ptr_ammo = &pl.ammo_buckshot;
+			break;
+		case CALIBER_45ACP:
+			ptr_ammo = &pl.ammo_45acp;
+			break;
+		case CALIBER_357SIG:
+			ptr_ammo = &pl.ammo_357sig;
+			break;
+		case CALIBER_57MM:
+			ptr_ammo = &pl.ammo_57mm;
+			break;
+		}
+
+		if (*ptr_ammo >= cs_ammoinfo[cal].a_max)
+			return;
+
+		*ptr_ammo += cs_ammoinfo[cal].a_size;
+		Money_AddMoney(pl, -cs_ammoinfo[cal].price);
+	}
+}
+
+/* We want to loop through all the possible weapons in case the server
+ * enabled the ability to pick up more than one primary/secondary weapon */
+
+void
+CSEv_AmmoBuySecondary(void)
+{
+	int cal = 0;
+	player pl = (player)self;
+
+	for (int i = 1; i < g_weapons.length; i++) {
+		if ((pl.g_items & g_weapons[i].id) && (g_weapons[i].slot == 1)) {
+			switch (i) {
+			case WEAPON_USP45:
+				cal = CALIBER_45ACP;
+				break;
+			case WEAPON_GLOCK18:
+				cal = CALIBER_9MM;
+				break;
+			case WEAPON_DEAGLE:
+				cal = CALIBER_50AE;
+				break;
+			case WEAPON_P228:
+				cal = CALIBER_357SIG;
+				break;
+			case WEAPON_ELITES:
+				cal = CALIBER_9MM;
+				break;
+			case WEAPON_FIVESEVEN:
+				cal = CALIBER_57MM;
+				break;
+			}
+			Ammo_BuyCaliber(pl, cal);
+		}
+	}
+	Weapons_RefreshAmmo(pl);
+}
+
+void
+CSEv_AmmoBuyPrimary(void)
+{
+	int cal = 0;
+	player pl = (player)self;
+
+	for (int i = 1; i < g_weapons.length; i++) {
+		if ((pl.g_items & g_weapons[i].id) && (g_weapons[i].slot == 0)) {
+			switch (i) {
+			case WEAPON_M3:
+				cal = CALIBER_BUCKSHOT;
+				break;
+			case WEAPON_XM1014:
+				cal = CALIBER_BUCKSHOT;
+				break;
+			case WEAPON_MP5:
+				cal = CALIBER_9MM;
+				break;
+			case WEAPON_P90:
+				cal = CALIBER_57MM;
+				break;
+			case WEAPON_UMP45:
+				cal = CALIBER_45ACP;
+				break;
+			case WEAPON_MAC10:
+				cal = CALIBER_45ACP;
+				break;
+			case WEAPON_TMP:
+				cal = CALIBER_9MM;
+				break;
+			case WEAPON_AK47:
+				cal = CALIBER_762MM;
+				break;
+			case WEAPON_SG552:
+				cal = CALIBER_556MM;
+				break;
+			case WEAPON_M4A1:
+				cal = CALIBER_556MM;
+				break;
+			case WEAPON_AUG:
+				cal = CALIBER_556MM;
+				break;
+			case WEAPON_SCOUT:
+				cal = CALIBER_762MM;
+				break;
+			case WEAPON_AWP:
+				cal = CALIBER_338MAG;
+				break;
+			case WEAPON_G3SG1:
+				cal = CALIBER_762MM;
+				break;
+			case WEAPON_SG550:
+				cal = CALIBER_556MM;
+				break;
+			case WEAPON_PARA:
+				cal = CALIBER_556MMBOX;
+				break;
+			}
+			Ammo_BuyCaliber(pl, cal);
+		}
+	}
+	Weapons_RefreshAmmo(pl);
+}
+
+void
+Ammo_AutoFill(float fWeapon)
+{
+	player pl = (player)self;
+
+	if (autocvar_fcs_fillweapons == FALSE) {
+		return;
+	}
+
+	/* TODO: */
+}
+
+void
+Ammo_Clear(void)
+{
+
+}
diff --git a/src/server/cstrike/progs.src b/src/server/cstrike/progs.src
index 7442e84e..ccda4f7a 100755
--- a/src/server/cstrike/progs.src
+++ b/src/server/cstrike/progs.src
@@ -88,6 +88,7 @@
 ../cstrike/gamerules_multiplayer.cpp
 
 ../cstrike/client.c
+../cstrike/ammo.c
 ../cstrike/buy.c
 ../client.c
 ../cstrike/server.c