The Sunday Telegraph uncovered documents showing that Manroy was attempting to sell sniper rifles and machine guns to Libya in the months before the revolution began in February 2011. After attending the Libyan arms fair Libdex in 2010, Manroy invited Major General Al Sayd, the chief of military procurement and production of the Libyan Armed Forces, to visit the UK to view products including "the full range of sniper weapons that were on show at the Libdex Show along with our other products that include our range of UK MOD machine guns." The promotion effort was supported by the UK government. The visit had not yet taken place when the uprising began and the company stated (PDF) that it had not sold arms to Libya.

Manroy Engineering's products include sniper rifles, machine guns, weapon mounting systems and turrets for armoured fighting vehicles.

In 2008, the Telegraph reported that Manroy supplied the UK army with heavy machine guns and that the company also supplied the weapons to Saudi Arabia.