Not much to add to what the others have said. The barrels are so thin that the only options for threading are 1/2-20, 1/2-28 and 13x1.
Some of them don t always have the straightest barrels and require a bit of attention from the smith to properly fit a suppressor. But those barrels still seems to shoot well. The model 7 is a butt heavy rifle and a suppressor does actually balanced the rifle very well.
They are probably one of the best bush rifle base out of everything else available out there . The synthetic stock is a bit so so, but ken henderson makes some excellent replacement stocks for it.
Magazine options are available through Pacific tool and gauge if you can bother to fill the paperwork , pay the price and be very very patient.
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