Original: The same system is available in 37 mm size for law enforcement agencies The 40 mm model has a rifling of 1:1.224, is 900 mm long, and weighs 4.4 kg (9.5 lb).
Simplified: The same system is available in 37 mm size for police. The 40 mm model has a rifling of 1:1.224, is 900 mm long, and weighs 4.4 kg (9.5 lb).