An R4 rifle round travels at 980m a second, which equates to 3,500km/h.

It’s hard to believe there is glass capable of stopping such a bullet, until you see the array of shot-up car windows displayed in the entrance hall of Armormax which did just that. Some of the windows were used for demonstrations while others saved lives in actual hijacking attempts...

BL Premium

This article is reserved for our subscribers.

A subscription helps you enjoy the best of our business content every day along with benefits such as articles from our international business news partners; ProfileData financial data; and digital access to the Sunday Times and Sunday Times Daily.

Already subscribed? Simply sign in below.

Questions or problems? Email or call 0860 52 52 00. Got a subscription voucher? Redeem it now