fixes improvised shotgun back slot invisible shit

code/modules/projectiles/guns/projectile/shotgun.dm

@@ -134,7 +134,7 @@
 	item_state = "shotgun"
 	w_class = 4.0
 	force = 10
-	flags =  CONDUCT
+	flags = CONDUCT
 	slot_flags = SLOT_BACK
 	origin_tech = "combat=3;materials=1"
 	mag_type = /obj/item/ammo_box/magazine/internal/cylinder/dualshot
@@ -175,6 +175,7 @@
 	item_state = "shotgun"
 	w_class = 4.0
 	force = 10
+	slot_flags = null
 	origin_tech = "combat=2;materials=2"
 	mag_type = /obj/item/ammo_box/magazine/internal/cylinder/improvised
 	sawn_desc = "I'm just here for the gasoline."
@@ -184,7 +185,6 @@
 	if(istype(A, /obj/item/stack/cable_coil) && !sawn_state)
 		var/obj/item/stack/cable_coil/C = A
 		if(C.use(10))
-			flags =  CONDUCT
 			slot_flags = SLOT_BACK
 			icon_state = "ishotgunsling"
 			user << "<span class='notice'>You tie the lengths of cable to the shotgun, making a sling.</span>"