New non-harmful medicinal darts.

code/modules/projectiles/ammunition/special/syringe.dm

@@ -59,3 +59,10 @@
 		S.forceMove(D)
 		D.injector = S
 	..()
+
+/obj/item/ammo_casing/syringegun/dart
+	name = "syringe gun spring"
+	desc = "A high-power spring that throws syringes."
+	projectile_type = /obj/item/projectile/bullet/dart/syringe
+	firing_effect_type = null
+	harmful = FALSE

code/modules/projectiles/guns/misc/syringe_gun.dm

@@ -102,3 +102,15 @@
 		else
 			to_chat(user, "<span class='warning'>[src] cannot hold more syringes!</span>")
 	return FALSE
+
+/obj/item/gun/syringe/dart
+	name = "dart gun"
+	desc = "A compressed air gun, designed to fit medicinal darts for application of medicine for those patients just out of reach."
+	icon_state = "dartgun"
+	item_state = "dartgun"
+	materials = list(MAT_METAL=2000, MAT_GLASS=500)
+	suppressed = TRUE //Softer fire sound
+
+/obj/item/gun/syringe/dart/Initialize()
+	..()
+	chambered = new /obj/item/ammo_casing/syringegun/dart(src)