Brazen criminals are breaking into properties and bashing through walls to steal guns from licensed firearm owners, Queensland Police Commissioner Ian Stewart has warned.

Others are importing parts from overseas to make firearms even more lethal.

Police Commissioner Ian Stewart and Police Minister Mark Ryan speak to reporters about more than 800 illegal firearms seized this month. Credit:AAP Image/ Glenn Hunt

Mr Stewart made the comments while revealing a statewide blitz, Operation Quebec Camouflage, had netted 869 weapons since it began on February 1.

Among the haul was a military anti-tank rifle, found in a shipping container at Winton, along with more than 120 firearms.