Found this the other day, a conversion I did a few back in the early 90's. Has a few surprises inside, one to frustrate the commercial reading kits around at the time and also against drill attack for the gatings or the bolt stump.

Custom made pipe keys were shortened considerably and joints silver brazed at the bow.
Machined Stainless steel drill pin modification to the bolt thrower.

This one served about 5 years of hard experimental use on a property before retirement.
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ID:	19078 Click image for larger version. 

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