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PostPosted: Sat Nov 28, 2009 12:02 pm 
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Mil-Surp Owner
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I have a nice Mk2 stock, and saw a good deal on a Mk 1/2 action (never heard of it), and wondered if it would fit. Thanks in advance!


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PostPosted: Sat Nov 28, 2009 12:17 pm 
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G'day Elvis,

The short answer is, yes. The No4 Mk1/2 was an upgrade from Mk1 specs to MKII specs, so the stock should work out as a clean fit.

Best, Tiki.

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PostPosted: Sat Nov 28, 2009 12:21 pm 
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Thanks Tiki!


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PostPosted: Sat Nov 28, 2009 1:11 pm 
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fatelvis wrote:
I have a nice Mk2 stock, and saw a good deal on a Mk 1/2 action (never heard of it), and wondered if it would fit. Thanks in advance!


The mark 1/2 action was part of a refurb / rebuild programme when it was found difficult to hold zero with the No4 Mk1 and Mk1*.

By the mid / end of WW2 there was a desperate shortage of properly dried timber to make stocks and therefore kiln dried wood was starting to be used, it was found that in the various different climates around the world that this wood swelled and warped, which, with the trigger being hung on the trigger guard (which was itself adjacent to the woodwork) meant that the trigger could be twisted and affected trigger pull-off and accuracy.

It was found that re-mounting the trigger onto the action removed this problem and the rifles so made we issued as No4 Mk2.

To keep as many rifles servicable as possible the No4 Mk1 were retro-fitted with this modification and were renamed No4 Mk1/2.
The No4 Mk1* rifles when retro-fitted were called No4 Mk1/3

No4 Mk1/2, No4 Mk1/3, No4 Mk2 Picture On top
No4 Mk1 and Mk1* - bottom picture.
Hope that helps understand the differences.
Image

Image

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PostPosted: Sat Nov 28, 2009 1:38 pm 
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Mil-Surp Owner
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Thanks Alan, I did not know the trigger change was for that reason. Interesting!


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PostPosted: Sun Nov 29, 2009 12:32 pm 
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Alan, when this conversion was done, the part that the trigger pivots on in the receiver, how is it mounted to the receiver? Is it welded? It appears that the old trigger guard was machined for clearance of the new parts.

This post should be a sticky. great info.

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PostPosted: Sun Nov 29, 2009 2:02 pm 
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madcratebuilder wrote:
Alan, when this conversion was done, the part that the trigger pivots on in the receiver, how is it mounted to the receiver? Is it welded? It appears that the old trigger guard was machined for clearance of the new parts.

This post should be a sticky. great info.


The conversion programme to /2 and /3 (It’s not ‘slash 2 or 3’ in UK military parlance, but said as ‘number 4 mark 1 oblique 2’) was done not by brazing on a pre-machined block at the butt socket but by brazing on a SOLID partially machined block. The block was then finished when it was attached to the rifle. This ensured that the half circle recess to clear the new SCREW, tie, fore-end, the radial trigger slot and most importantly, the trigger axis pin hole was in the EXACT position.

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