Walther P1 Locking Block. Genuine German Walther production made for the German Army. Part number 03 on the pictured Walther schematic.
We have the nicest P1 Locking Blocks you can find anywhere. Most are like new. All are post war P1 production but they fit perfect on P38 pistols too. Post-war steel was much stronger than WWII production. This is a great spare to keep on hand.
For those who have asked we have both the later production and earlier milled production blocks in stock. If you prefer one type please specify in the customer comments box at checkout.