Denel NTW-20

• Name — Denel NTW-20 • Origin — South Africa • Type — Anti-materiel rifle • Is Ranged — yes • Service — 1998present • Designer — Tony Neophytou • Design Date — 1995 • Manufacturer — Denel Land Systems • Variants — NTW 20, NTW 14.5, NTW 20×110mm • Weight — 31 kg (NTW 20), 34 kg (NTW 14.5) • Length — 1,795 mm (NTW 20), 2,015 mm (NTW 14.5) • Part Length — 1,000 mm (NTW 20), 1,220 mm (NTW 14.5) • Crew — Two; rifle breaks down into two parts for transport and fits into two backpacks weighing 15kg each, one containing the weapon receiver section, while the other contains the barrel and ammunition • Cartridge — 20×82mm (NTW 20) 20×110mm Hispano (NTW 20×110mm) 14.5×114mm (NTW 14.5) • Action — Bolt action, recoiling barrel • Velocity — 720 m/s (20×82mm) 820 m/s (20×110mm) 1,000 m/s (14.5×114mm) • Range — 1,500m (20×82mm) 1,800m (20×110mm) 2,300m (14.5×114mm) • Feed — 3-round detachable box magazine (20×82mm and 14.5×114mm) Single shot (20×110mm) • Sights — 8 × 56 Lynx Telescopic sight

The weapon was designed by Tony Neophytou (co-designer of the Neostead combat shotgun). Development of the system began in August 1995 under the "Aerotek" name and a working prototype was ready for testing four and a half months later. This rapid progress was made possible by Neophytou's expertise in the field of recoil reduction systems, having worked on helicopter turrets in the past. To further reduce the amount of research and development, the project recycled the barrel, bolt and barrel extension of the existing Vektor GA1 automatic cannon. It was put into production by Denel Land Systems in two versions; 20×110mm HS and 20×82mm. The latter model is also available in 14.5×114 mm and conversion between the calibres can be done in the field by swapping the barrel and bolt assembly. The significantly larger 20×110mm model cannot be converted to another calibre. The rifle was accepted into service with the South African National Defence Force in 1998.

Switching between the two calibres of the NTW (20×82mm and 14.5×114mm) requires changing the bolt, barrel, sighting gear and magazine. (A third variant, the NTW 20×110mm has been developed, but is not designed for barrel calibre switching.) Caliber switching the NTW 20/14.5 can be accomplished in the field without specialised tools. The magazine protrudes from the left side of the receiver. The NTW can be disassembled and packed into two backpacks for carriage. A muzzle brake is fitted on the end of the barrel which absorbs an estimated 50%–60% of recoil. This is further supplemented by a buffered slide in the receiver.

• 20×82mm — 14.5×114mm — 20×110mm • Cartridge — 20×82mm — 14.5×114mm — 20×110mm Hispano-Suiza • Weight (empty) — 30.0 kg — 34.0 kg — 32.0 kg • Overall length — 1800 mm — 2016 mm — 1800 mm • Rifling (1 full turn) — 560 mm — 408 mm • Length of barrel — 1000 mm — 1220 mm — 1000 mm • Muzzle velocity — 720 m/s — 1000 m/s — 820 m/s • Muzzle energy — 28000 J — 32000 J — 42000 J • Effective range — > 1600 m — > 2400 m — > 1800 m

• Azerbaijan: Used by Azerbaijani Land Forces. • India: Used by the Indian Army. • Indonesia: Used by Taifib (Marine Amphibious Reconnaissance Battalion) of the Indonesian Navy; and Kopasgat (Quick Reaction Forces Command) of the Indonesian Air Force. • Malaysia: Used by Malaysian Army. • South Africa: Used by South African Special Forces and the South African Army.