Hi I have a destroyer carbine also so I did a search and this is what I found:
From:
http://www.9mmlargo.com/parts.htmNew firing pins for Destroyer Carbines can be obtained from:
Keith Whaley, pistolsmith,
WHALEY's Gunsmithing
3629 Greenwood Ave
Los Angeles, CA 90066-3017
Ph 310-391-9871, 8A-6P PST, M-F & Sun.
Here's the information quoted from Keith:
"What I CANNOT do, is to make any firing pins for the individual owners to "drop-in" and assemble. Destroyers are hand fit from such a variety of parts which differ dimensionally, there is no such thing as a drop-in Firing Pin possible.
I must ask for the complete bolt (ONLY) to be sent to me, post-paid, for accurate measurements prior to machining and fitting the new pin. Send along a typical fired case, if you have one available. I will finish machine the firing pin from 140,000 psi tool steel, thread it, hand-fit it for length and pin hole size, re-install the spring and re-assemble with the proper firing pin protrusion. It is ready as a completely assembled bolt upon it's return. The original pin is returned with the bolt.
I have settled on $45/pin, to custom fit to the customer's bolt. I'll pay return shipping. 100% guaranteed to satisfy the gun's needs."
Several friends have gotten excellent service from Keith, and I highly recommend him.