In an effort to provide the best and most bulletproof firing pin available, we have improved the design and changed the tempering. And yes, this has been prompted by our customers reporting breaking of our FP. Almost 1% have broken in half, (where spring meets the shoulder) and between 2% and 3% have had the "head" break off the back end.
The new "drop-in" version, Item #001 pictured below has some material cut away from the top side of the head for clearance between it and the Carrier. No alterations required, simply install in your Bolt and shoot. Or as always, you can send your bolt and check or MO for $47.00, and we'll install FP Kit and do bolt face treatment described here:
www.murraysguns.com/poppedprimers.htm

And the "best" we have to offer, Item #001M pictured below,
requires a slight modification to the Carrier as can be seen in the before and after pictures below. The top FP has spring needed for all post 1951 guns, (post-'51 Russians and all Chinese, Albanian, Romanian and Yugos) center FP has spring for pre-51 Russian SKSs only, and bottom FP is simply no spring picture for reference. This version runs $60.00 all inclusive. (even includes return shipping)

Having the Carrier mod done does Not prevent you from going back to an original firing pin should you choose to do so.
The top Carrier is an unmodified Yugo and below is the same Carrier after "clearance cut" modification is done. (shiny "U" shaped cut)


"Drop-in" versions are now ready for shipment and feel free to send your Bolt, or your Bolt and Carrier for the best we have to offer.