Paradigm Shift Technologies’ coating is used inside gun barrels to protect and preserve the weapons from the hot temperatures and impact of projectiles passing through.

A Canadian innovation is allowing the U.K. defence industry to bring more of its gun manufacturing in-house, lessening its reliance on foreign suppliers as it strives to fulfill new defence spending targets.

Toronto-based Paradigm Shift Technologies is partnering with Andover, U.K.-based Perfect Bore Defence, a division of Perfect Bore Manufacturing, to open a gun barrel coating facility in Hampshire county.

The U.K. operation will use Paradigm’s patented coating technology to line the inside of gun barrels, including those manufactured by Perfect Bore.

The Canadian company’s process, known as enhanced physical vapor de

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