FX AMP REG

If your gun is not too old call FX USA.
Word of warning those little tiny O-rings on the regulator stem are no fun to replace. Make sure you are on a surface that wont allow the little buggers to bounce and will keep them visible when you lose your grip on them.
I have done it twice and it ain’t good entertainment. I like a white bath towel For a work surface.
 
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