diff --git a/addons/overheating/functions/fnc_getWeaponData.sqf b/addons/overheating/functions/fnc_getWeaponData.sqf
index 2a9dc406b9..f2bd876a6c 100644
--- a/addons/overheating/functions/fnc_getWeaponData.sqf
+++ b/addons/overheating/functions/fnc_getWeaponData.sqf
@@ -81,7 +81,10 @@ private _reloadTime = getNumber (configfile >> "CfgWeapons" >> _weapon >> (_mode
 
 private _closedBolt = getNumber (configFile >> "CfgWeapons" >> _weapon >> QGVAR(closedBolt));
 
-private _barrelMass = METAL_MASS_RATIO * (getNumber (configFile >> "CfgWeapons" >> _weapon >> "WeaponSlotsInfo" >> "mass") / 22.0) max 1.0;
+private _barrelMass = getNumber (configFile >> "CfgWeapons" >> _weapon >> QGVAR(barrelMass));
+if (_barrelMass <= 0) then {
+    _barrelMass = METAL_MASS_RATIO * (getNumber (configFile >> "CfgWeapons" >> _weapon >> "WeaponSlotsInfo" >> "mass") / 22.0) max 1.0;
+};
 
 // Cache the values
 _weaponData = [_dispersion, _slowdownFactor, _jamChance, _modes, _muzzle, _reloadTime, _closedBolt, _barrelMass];
diff --git a/docs/wiki/framework/overheating-framework.md b/docs/wiki/framework/overheating-framework.md
index 5af0079af5..24f2255afe 100644
--- a/docs/wiki/framework/overheating-framework.md
+++ b/docs/wiki/framework/overheating-framework.md
@@ -53,10 +53,16 @@ class CfgWeapons {
 
 ```cpp
 class CfgWeapons {
-    class Rifle_Long_Base_F ;
+    class Rifle_Base_F;
+    class Rifle_Long_Base_F;
+
+    class MyRifle: Rifle_Base_F {
+        ace_overheating_closedBolt = 1; // Closed bolt, can cook off from barrel heat.
+        ace_overheating_barrelMass = 1.5895; // Mass of the area heated by firing, not strictly just the barrel. Higher mass gives slower heat buildup and faster cooling. Default estimation is 55% of weapon weight in kg.
+    };
 
     class MySniper: Rifle_Long_Base_F {
-        ace_overheating_closedBolt = 1; // Closed bolt, can cook off from barrel heat.
+        ace_overheating_closedBolt = 1;
     };
 
     class MyMG: Rifle_Long_Base_F {