Ok, done.

code/modules/projectiles/ammunition/_ammunition.dm

@@ -39,8 +39,7 @@
 		QDEL_NULL(BB)
 	return ..()
 
-/obj/item/ammo_casing/update_icon()
-	..()
+/obj/item/ammo_casing/update_icon_state()
 	icon_state = "[initial(icon_state)][BB ? "-live" : ""]"
 	desc = "[initial(desc)][BB ? "" : " This one is spent."]"
 

code/modules/projectiles/ammunition/caseless/_caseless.dm

@@ -11,6 +11,5 @@
 	else
 		return FALSE
 
-/obj/item/ammo_casing/caseless/update_icon()
-	..()
+/obj/item/ammo_casing/caseless/update_icon_state()
 	icon_state = "[initial(icon_state)]"

code/modules/projectiles/ammunition/caseless/foam.dm

@@ -9,8 +9,7 @@
 	harmful = FALSE
 	var/modified = FALSE
 
-/obj/item/ammo_casing/caseless/foam_dart/update_icon()
-	..()
+/obj/item/ammo_casing/caseless/foam_dart/update_icon_state()
 	if (modified)
 		icon_state = "foamdart_empty"
 		desc = "It's nerf or nothing! ... Although, this one doesn't look too safe."

code/modules/projectiles/guns/ballistic.dm

@@ -19,8 +19,7 @@
 	chamber_round()
 	update_icon()
 
-/obj/item/gun/ballistic/update_icon()
-	..()
+/obj/item/gun/ballistic/update_icon_state()
 	if(current_skin)
 		icon_state = "[unique_reskin[current_skin]][suppressed ? "-suppressed" : ""][sawn_off ? "-sawn" : ""]"
 	else

code/modules/projectiles/guns/ballistic/bow.dm

@@ -44,7 +44,7 @@
 		to_chat(user, "<span class='notice'>You notch the arrow.</span>")
 		update_icon()
 
-/obj/item/gun/ballistic/bow/update_icon()
+/obj/item/gun/ballistic/bow/update_icon_state()
 	icon_state = "[initial(icon_state)]_[get_ammo() ? (chambered ? "firing" : "loaded") : "unloaded"]"
 
 /obj/item/gun/ballistic/bow/can_shoot()

code/modules/projectiles/guns/ballistic/laser_gatling.dm

@@ -73,7 +73,7 @@
 				M.putItemFromInventoryInHandIfPossible(src, H.held_index)
 
 
-/obj/item/minigunpack/update_icon()
+/obj/item/minigunpack/update_icon_state()
 	if(armed)
 		icon_state = "notholstered"
 	else

code/modules/projectiles/guns/magic.dm

@@ -73,9 +73,6 @@
 		recharge_newshot()
 	return 1
 
-/obj/item/gun/magic/update_icon()
-	return
-
 /obj/item/gun/magic/shoot_with_empty_chamber(mob/living/user as mob|obj)
 	to_chat(user, "<span class='warning'>The [name] whizzles quietly.</span>")
 

code/modules/projectiles/guns/magic/wand.dm

@@ -21,7 +21,7 @@
 	. = ..()
 	. += "Has [charges] charge\s remaining."
 
-/obj/item/gun/magic/wand/update_icon()
+/obj/item/gun/magic/wand/update_icon_state()
 	icon_state = "[initial(icon_state)][charges ? "" : "-drained"]"
 
 /obj/item/gun/magic/wand/attack(atom/target, mob/living/user)