Comments on: Firing pin for the VG1-5 http://gunlab.net/firing-pin-for-the-vg1-5/ Adventures in gun building! Sat, 11 Apr 2026 23:49:22 +0000 hourly 1 https://wordpress.org/?v=4.1.41 By: John Petrie http://gunlab.net/firing-pin-for-the-vg1-5/#comment-3338 Mon, 06 Oct 2014 19:17:35 +0000 http://gunlab.net/?p=773#comment-3338 Chuck,

How much more time is the VG1-5 going to take?

John Petrie

]]> By: Chuck http://gunlab.net/firing-pin-for-the-vg1-5/#comment-939 Wed, 06 Aug 2014 18:05:57 +0000 http://gunlab.net/?p=773#comment-939 The bolt and the entire fire control mechanism has been redesign.

]]> By: Chuck http://gunlab.net/firing-pin-for-the-vg1-5/#comment-938 Wed, 06 Aug 2014 18:03:52 +0000 http://gunlab.net/?p=773#comment-938 John thanks for the info.I will be changing the firing pin material.

]]> By: John D. http://gunlab.net/firing-pin-for-the-vg1-5/#comment-630 Tue, 29 Jul 2014 18:26:21 +0000 http://gunlab.net/?p=773#comment-630 German WW II metallurgical practice for firing pins was usually DIN C20 (AISI/SAE 1018, more or less) steel carburized. This is not especially practical for short run production. Developing a successful carburizing technique requires a lot of trial pieces.

I have made replacement firing pins for WW II MG.34s and P.38s, which have fragile firing pins, from AISI Types S5 and H13 tool steel. Heat treatment is easy: austenitize, air quench, and double temper. You can cryogenically treat and add a temper if you want to get fancy. Air quenching minimizes distortion, which may be the reason you are trying to adapt an existing, already heat treated, firing pin. The resulting firing pins are extremely tough and require no clean up after heat treating.

AISI Types S5 and H13 are too expensive for production gun firing pins, but they work well for ‘one offs’. Some of my friends have used AISI Type 410 stainless steel, but I don’t know how well this has held up – no feedback.

]]> By: Harry Connors http://gunlab.net/firing-pin-for-the-vg1-5/#comment-629 Mon, 28 Jul 2014 02:45:20 +0000 http://gunlab.net/?p=773#comment-629 Glad to hear that the project is still moving along. As you noted it requires a lot of thought process to come up with solutions to what seem like simple problems but are not. Looking forward to more. Harry

]]> By: juver http://gunlab.net/firing-pin-for-the-vg1-5/#comment-628 Sun, 27 Jul 2014 21:54:44 +0000 http://gunlab.net/?p=773#comment-628 i like the X-Ray cat pictures
what other things have been redone or have been re design ?

]]> By: Marko http://gunlab.net/firing-pin-for-the-vg1-5/#comment-626 Sun, 27 Jul 2014 17:20:04 +0000 http://gunlab.net/?p=773#comment-626 What is the purpose of the notches? I am not at all familiar with this firearm. Just curious. Nice!

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