I have recently acquired a VSR knowing it had problems, firstly the spring had been chopped and was to short for the spring guide stopper to stay in place have replaced with a 100Sp spring. However when I pull back the bolt as I release pressure to push bolt forward again the piston slips and doesn't seem to stay in place on the sear. It has all stock internals and the piston and sear do not look worn at all, any veterans care to offer any advice.
Any help greatly appreciated,
James
Any help greatly appreciated,
James