No1Mk111 Receiver Holding Fixture

[Peter Laidler]

We really need to know what you want to do Tom. If it is to, say, mount telescopes on 30 rifles in an identical manner....... OR machine 300 identical DP bodies (as we were charged with doing) in effect run a production line where they're all identical, then you have a problem!¬ Because you HAVE to find holding points that are identical in EVERY body. And with sooooo many manufacturers with allowable tolerances and (dare I say it.....) poor quality assurance you won't get it. The only things you DO know that are identical across the board are the bolt-way and the two horizontal edges across the rear of the bolt-way before the bridge charger guide.

Even the lower apparently straight edged ledge around the bottom of the magazine opening is not either accurate nor constant!
WO2 Ian Xxxxxx who was running the DP NO1 project abandoned the idea and gave them all DP No4's! I know/realise that that's the easy way out, especially when you have zillions of No4 alternatives.

So the question is this. Do you just want a jig to hold the body steady OR do you want a jig to hold EVERY body identically in every axial plane