Stop guns from causing knockback

mods/ctf/ctf_modes/ctf_mode_classes/init.lua

@@ -147,7 +147,7 @@ ctf_modebase.register_mode("classes", {
 	can_punchplayer = features.can_punchplayer,
 	on_healplayer = features.on_healplayer,
 	calculate_knockback = function(player, hitter, time_from_last_punch, tool_capabilities, dir, distance, damage)
-		if features.can_punchplayer(player, hitter) then
+		if features.can_punchplayer(player, hitter) and not tool_capabilities.damage_groups.ranged then
 			return 2 * (tool_capabilities.damage_groups.knockback or 1) * math.min(1, time_from_last_punch or 0)
 		else
 			return 0