My first range of over barrel suppressors had an aluminium muzzle brake and stainless baffles, 2.5 years ago I changed to a slightly different model that was all stainless internals, 1 year ago I released the modular suppressors that are 100% aluminium, a very strong grade of aluminium.
I assume your friend has one of the first models...
He should have got hold of me with any issues so I could identify what the problem was.
DPT
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