As I've just acquired a twinmaster top I read this thread with interest. I have seen the magicnine assister kits online and wondered if they were worth fitting. The other thought I had is why not just fit a stiffer spring, why bother with the assister spring ?. fitted in addition to a spacer or two to increase reg pressure.

Oh and by the way I'm looking for a scope rail to fit a red dot sight .Does anyone know where I might get one ?

tia

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