outlining on rifle is more defined, made a red and blue variant along with a generic variant.

code/modules/projectiles/ammunition/energy.dm

@@ -173,4 +173,7 @@ obj/item/ammo_casing/energy/net
 	select_name = "DESTROY"
 
 /obj/item/ammo_casing/energy/instakill/blue
-	projectile_type = /obj/item/projectile/beam/instagib/blue
+	projectile_type = /obj/item/projectile/beam/instakill/blue
+
+/obj/item/ammo_casing/energy/instakill/red
+	projectile_type = /obj/item/projectile/beam/instakill/red

code/modules/projectiles/guns/energy/special.dm

@@ -294,7 +294,14 @@
 	force = 60
 	origin_tech = null
 
+/obj/item/weapon/gun/energy/laser/instakill/red
+	desc = "A specialized ASMD laser-rifle, capable of flat-out disintegrating most targets in a single hit. This one has a red design."
+	icon_state = "instagibred"
+	item_state = "instagibred"
+	ammo_type = list(/obj/item/ammo_casing/energy/instakill/red)
+
 /obj/item/weapon/gun/energy/laser/instakill/blue
+	desc = "A specialized ASMD laser-rifle, capable of flat-out disintegrating most targets in a single hit. This one has a blue design."
 	icon_state = "instagibblue"
 	item_state = "instagibblue"
 	ammo_type = list(/obj/item/ammo_casing/energy/instakill/blue)

code/modules/projectiles/projectile/beams.dm

@@ -93,14 +93,17 @@
 	icon_state = "bluelaser"
 	suit_types = list(/obj/item/clothing/suit/redtag)
 
-/obj/item/projectile/beam/instagib
+/obj/item/projectile/beam/instakill
 	name = "instagib laser"
-	icon_state = "laser"
+	icon_state = "purple_laser"
 	damage = 200
 	damage_type = BURN
 
-/obj/item/projectile/beam/instagib/blue
-	icon_state = "bluelaser"
+/obj/item/projectile/beam/instakill/blue
+	icon_state = "blue_laser"
+
+/obj/item/projectile/beam/instakill/red
+	icon_state = "red_laser"
 
 /obj/item/projectile/beam/instakill/on_hit(atom/target)
 	. = ..()