Barrack Buster

Barrack buster is the colloquial name given to several improvised mortars, developed in the 1990s by the engineering group of the Provisional Irish Republican Army (IRA).
The first barrack buster - known to the British security forces as the Mark 15 mortar - consisted of a one metre long metal propane cylinder with a diameter of 36 cm that contained around 70 kg of home-made explosives and with a range between 75 and 275 m. The cylinder is an adaptation of a commercial 'Kosangas' gas cylinder for heating and cooking gas used in rural areas in Ireland.

It was first used in an attack on 7 December 1992 against a security base in Ballygawley, County Tyrone, in Northern Ireland, injuring a number of RUC officers. The projectile was deflected by the branches of a tree, which prevented further damage.

Read more about Barrack BusterProvisional IRA's Improvised Mortars, Use By Other Groups, Colloquial Usage