A similar situation would exist with other more powerful 105mm guns, such as the G7 LEO (Lightweight Experimental Ordnance) which is being developed in South Africa by Denel. G7 is a rifled, 57-caliber towed gun but an adaptation of it has been proposed for combat vehicles (see IDR 10/2001, p6). As it has a gross chamber volume of 12 liters, compared with 7.2 liters of the L7-type guns, it should be able to fire APFSDS projectiles with much more muzzle energy as well as firing HE projectiles to a range of 24km and to a much longer range with rocket assisted projectiles.
The adaptation of the G7 has been put forward as the kind of weapon capable of long-range indirect as well as direct fire which the US Army is aiming at under the designation of Multi-Role Armament and Ammunition System (MRAAS). However, US developers are considering more unconventional guns and, in particular, electrothermal-chemical (ETC) guns and guns with rotating chambers.