HC Deb 08 February 1978 vol 943 cc598-9W
Mr. Trotter

asked the Secretary of State for Defence what relative advantages are held by a rifled bore tank gun rather than a smooth bore gun which have led to the United Kingdom developing a new 120 mm rifled gun; and what effect he estimates this will have on the prospect of overseas sales for the British weapon.

Dr. Gilbert

The main advantage of rifled guns is that they can fire the complete range of fin and spin stabilised tank gun ammunition, whereas a smoothbore gun is confined to fin-stabilised rounds. Tank guns of British design have achieved substantial sales, and we believe that a new rifled gun would also sell well.