A pill press allegedly used to manufacture illegal drugs and loaded guns and hundreds of rounds of ammunition have been seized from a home linked to the Mongols bikie gang.
Gang crime squad officers discovered the dangerous items in a spare bedroom at the Alexander Heights home during an early morning raid yesterday.
Det-Sen. Sgt Darren Hart said the pill press was capable of producing thousands of pills and was often used by criminals to make ecstasy.
The guns - a homemade machine gun, a .22 rifle adapted to resemble an M16 assault rifle and a .22 rifle with a scope - were found in a wardrobe in a spare bedroom.
There was ammunition found for those weapons as well as ammunition that fitted other guns.
The raid was the latest attempt to disrupt the Mongols' activities.
The dangerous gang moved into Perth last year, patching over the Finks outlaw motorcycle club.
Police would not reveal who owned the Comet Court property or how it was associated with the gang.
A 58-year-old woman lives at the house.
Police said investigations are ongoing into who owns the weapons and the pill press and no charges have been laid.