Originally Posted by
wadcutter
stripped the rifle using neils guide and as expected all the red plastic seals had turned to mush, provisionally they can be replaced by o rings which I did I don't think the seal under the white inner piston seal is realy neaded its just a dust seal, the rifle cocks and fires but there is hardly any compression , I have read that the main piston has a inner piston that is oil filled and is pressurised so that you cant push the inner piston in if you know what I mean,it looks a bit of a bugger to take apart to check internal seals tried to get end bit off with moderate force but looks like it needs warming up with a hot air gun ,can anybody offer more help on this done as much research as I can and this piston is the problem, thanks again to neil and the professor for their help with this.