HK CAWS is a select-fire, smooth bore weapon, designed to fire special, high-presure shotshells, loaded with tungsten buckshot or fleschettes. HK CAWS utilised patented recoil-operated action with moving barrel and additional, self-regulated gas assist system (used to help unlock breechblock from the barrel if low-power ammo is used). The main goal of this system was to decrease felt recoil down to suitable level.
HK CAWS in appearance is somewhat similar to HK G11 advanced assault rifle, being built in bull-pup configuration, with integral carrying handle. Charging handle is located under the carrying handle, at the top of the receiver, and is ambidextrous. Standart HK-style safety-switch/fire selector has 3 position: Safe, Semi-auto, 3 rounds bursts. It was planned for this rifle to be useful on effective range around 150 meters with rate of fire of 200-300 rounds per minute.
The HK CAWS was tested by US Military, but the whole CAWS programme was closed, and the CAWS development freezed.
Techical specifications for HK CAWS
Type: select-fire, recoil operated (patented system with gas assit subsystem)
Gauge: 12 (special ammunition with belted case, 19,5е76 mm)
Length: 762-988 mm
Barrel length: 457-685 mm
Weigth 3,7-3,86 kg
Magazine: 10 rounds detachable box magazine