mares jet np 70

The Mares Jet is a slight revision of the Sten 87 with an improved trigger transmission pin mount, so is basically a Sten. The plastic stirrup fitting was replaced by the more traditional screw bush, you can see the change on these diagrams. A 70 cm gun is not too hard to load if you can push down on it as you tend to double over loading off your foot. A vacuum muzzle mainly allows you to use less pressure for the same shot, the minus is the vacuum seals wear out.

Most pneumatic guns can shoot two line wraps and hit something and kill it. Very short guns can shoot more, but that is just a function of the very short line wrap length on the gun and the fact that they are easy to load even if pumped up to near bursting.