Mine is stainless as aluminum was not available when I got it. A .22 might do fine with an aluminum frame. I would have to give one a try before making a recommendation.
UOTE=Tresbien;141538124]Mk4 would you buy steel or aluminium frame ? They sell it both versions those days, I think aluminium is a **** and its better to buy stainless steel ?[/QUOTE]
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