diff --git a/gsc.cpp b/gsc.cpp
index 82aac12..3b23bfb 100644
--- a/gsc.cpp
+++ b/gsc.cpp
@@ -228,7 +228,9 @@ scr_function_t scriptFunctions[] =
 
 #if COMPILE_WEAPONS == 1
 	{"getweaponmaxammo", gsc_weapons_getweaponmaxammo, 0},
+	{"setweaponmaxammo", gsc_weapons_setweaponmaxammo, 0},
 	{"getweaponclipsize", gsc_weapons_getweaponclipsize, 0},
+	{"setweaponclipsize", gsc_weapons_setweaponclipsize, 0},
 	{"getweapondamage", gsc_weapons_getweapondamage, 0},
 	{"setweapondamage", gsc_weapons_setweapondamage, 0},
 	{"getweaponmeleedamage", gsc_weapons_getweaponmeleedamage, 0},
diff --git a/gsc_weapons.cpp b/gsc_weapons.cpp
index d9b1b84..127530b 100644
--- a/gsc_weapons.cpp
+++ b/gsc_weapons.cpp
@@ -235,6 +235,56 @@ void gsc_weapons_setweapondamage()
 	stackPushBool(qtrue);
 }
 
+void gsc_weapons_setweaponmaxammo()
+{
+	int id;
+	int ammo;
+
+	if ( ! stackGetParams("ii", &id, &ammo))
+	{
+		stackError("gsc_weapons_setweaponmaxammo() one or more arguments is undefined or has a wrong type");
+		stackPushUndefined();
+		return;
+	}
+
+	if (!isValidWeaponId(id))
+	{
+		stackError("gsc_weapons_setweaponmaxammo() weapon index is out of bounds");
+		stackPushUndefined();
+		return;
+	}
+
+	WeaponDef_t *weapon = BG_WeaponDefs(id);
+	weapon->iMaxAmmo = ammo;
+
+	stackPushBool(qtrue);
+}
+
+void gsc_weapons_setweaponclipsize()
+{
+	int id;
+	int clipSize;
+
+	if ( ! stackGetParams("ii", &id, &clipSize))
+	{
+		stackError("gsc_weapons_setweaponclipsize() one or more arguments is undefined or has a wrong type");
+		stackPushUndefined();
+		return;
+	}
+
+	if (!isValidWeaponId(id))
+	{
+		stackError("gsc_weapons_setweaponclipsize() weapon index is out of bounds");
+		stackPushUndefined();
+		return;
+	}
+
+	WeaponDef_t *weapon = BG_WeaponDefs(id);
+	weapon->iClipSize = clipSize;
+
+	stackPushBool(qtrue);
+}
+
 void gsc_weapons_setweaponmeleedamage()
 {
 	int id;
diff --git a/gsc_weapons.hpp b/gsc_weapons.hpp
index 41cdb10..05e14bd 100644
--- a/gsc_weapons.hpp
+++ b/gsc_weapons.hpp
@@ -5,7 +5,9 @@
 #include "gsc.hpp"
 
 void gsc_weapons_getweaponmaxammo();
+void gsc_weapons_setweaponmaxammo();
 void gsc_weapons_getweaponclipsize();
+void gsc_weapons_setweaponclipsize();
 void gsc_weapons_getweapondamage();
 void gsc_weapons_setweapondamage();
 void gsc_weapons_getweaponmeleedamage();