runtime removal

code/modules/projectiles/gun_helpers.dm

@@ -700,6 +700,9 @@ DEFINES in setup.dm, referenced here.
 		CRASH("add_firemode called with a resulting gun_firemode_list length of [length(gun_firemode_list)].")
 
 /obj/item/weapon/gun/proc/remove_firemode(removed_firemode, mob/user)
+	if(!(removed_firemode in gun_firemode_list))
+		return
+
 	if(!length(gun_firemode_list) || (length(gun_firemode_list) == 1))
 		CRASH("remove_firemode called with gun_firemode_list length [length(gun_firemode_list)].")
 

code/modules/projectiles/guns/specialist.dm

@@ -267,15 +267,15 @@
 	if(toggling_action)
 		toggling_action.update_button_icon()
 
-/obj/item/weapon/gun/rifle/sniper/verb/toggle_laser()
+/obj/item/weapon/gun/rifle/sniper/verb/toggle_gun_laser()
 	set category = "Weapons"
 	set name = "Toggle Laser"
 	set desc = "Toggles your laser on or off."
 	set src = usr.contents
 
 	var/obj/item/weapon/gun/rifle/sniper/sniper = get_active_firearm(usr)
 	if((sniper == src) && has_aimed_shot)
-		toggle_laser(user)
+		toggle_laser(usr)
 
 //Pow! Headshot.
 /obj/item/weapon/gun/rifle/sniper/M42A