Just got this in from SD Studios. It's a fully machined aluminum/brass/stainless steel '89 Batgun. The dart has a brass tip with brass fins. Very heavy and pointy. It slides into the barrel of the gun. The gun itself is made up of an aluminum body and brass parts. The whole thing is very heavy. The trigger is spring-loaded and the cable reel spins.
This thing is just phenomenal. I need to go shopping for a great display case!