The UK is seeing a major shortage of ammunition
Tokyo Marui M870 Breacher gas pump action shotgun. This is a very high quality 1:1 scale copy of the M870 made by the best, Tokyo Marui! This has a gas powered tank that is attached in the pistol grip and takes the 30 round shell magazines in the body. This is full metal apart from the pump and the grip. This also has the option to fire either 3 shot, or 6 shot burst!
As with all gas weapons, performance varies depending on ambient temperature and speed of firing.