This is a short review for the Artemis Model 30. I have attached a link to a youtube video that I recently found, which includes a good general description. https://www.youtube.com/watch?v=RF0tN5ps6jI It has a 280 cc air tube that surrounds the barrel, is fillable to 250 bar, and therefore has no bottle or separate air tube. I prefer this to the plumbing that appears on bottle guns. The tube is 1.375" in diameter and encloses a 24" barrel with 12 groove rifling. It has an externally adjustable regulator and the hammer is adjustable.The bolt is stout and operates smoothly. It looks more like a centerfire varmint rifle than an air gun. It prefers longer pellets and after adjustments shoots the .22 cal JSB 25.39 grain "redesigned" pellet at 820 fps. 10 shot groups at 20 yards have been under .100" center to center. The trigger is adjustable, comes with a single shot adapter held in by a small magnet, and a magazine. Fit and finish are excellent. The front of the air tube is sealed with a short extension that includes baffles and spacers which help reduce the report significantly, but it isn't quiet. There are no available suppressors, and if you added one, it would be a very long air gun. You can buy a Model 30 for about $550, and given the power, accuracy and uniqueness, it is a very good value.