Things I liked: Fast and accurate when they don't fall out of the barrel before firing.
Things I would have changed: Quality control
What others should know: 40% of these fell right through the barrel of my Crosman 2240 when the barrel tip is pointed down.
Things I liked: The precision is definitely worth mentioning - at 10-meters I was able to make 10-shot groups with Beeman Kodiaks that were simply one ragged hole. Groups got progressively larger with lighter pellets.
Things I would have changed: The factory either installed the wrong breech seal or crushed it during assembly. Half of it was actually embedded deeper than the metal surrounding it. Since other reviews have noted the same problem, these should be shipped with extra seals. Without a cheek rest, the stock is OK with the open sights, but when using the scope, it takes a little time with each shot to get proper eye alignment. I didn't find the recoil pad objectionable like some reviewers did. Even though I have extra large hands, I find the safety is hard to reach without rotating my hand on the pistol grip. The trigger pull weight is not adjustable - you can only adjust the length of the first stage (I didn't try it). All three screws on the stock came loose after about 150 shots - there wasn't enough locktite on the screws. The scope broke after about 200 shots - everything went blurry, and the zoom stuck on 3. Perhaps sell this gun cheaper without a scope?
What others should know: After replacing the breech seal, I put about 100 pellets through the gun before these tests. Here are my results for 5 shots of each (pellet,weight, average fps +/- approx range): H&N Field Target Trophy Green, 9.56 gr, 1038 +/- 20 (200 fps or 16% slower than claimed performance); RWS Superdome, 14.5 gr, 800 +/- 5; Beeman Kodiak, 21.14 gr, 683 +/- 0. Even though the description reads "Functions perfectly in cold weather," I found that the velocity drops about 12% and becomes erratic at temperatures near freezing. Tests with the Beeman Kodiak went from 683 fps +/- 0 at 65F to 600 fps +/- 30 at 33F. Worse, much like a CO2 gun, the more I shot, the slower the pellets went - dropping as low as 530 fps. Perhaps the metal of the barrel or the piston cylinder is contracting and increasing friction, or maybe the piston lube is turning to gel. Regardless, assuming the chronograph is functioning consistently at all temperatures, the perfect function in cold weather claim appears to be untrue. Lastly, I tested the statement "No spring fatigue, even if you leave it cocked for hours." I left it cocked indoors for 8 hours and then shot through the chonograph. The speed of the Beeman Kodiaks dropped to 415 fps (previously 683 fps) and RWS superdomes dropped to 510 fps (previously 800 fps). Worse, it never recovered - this caused permanent damage. I'm assuming the gas piston leaked. I returned the gun and ordered the Hatsan 125 nitro piston.
Things I liked: Fits my Hatsan 125.
Things I would have changed: The 8-40 x 1/4 hex cap screw. The head strips out before you can get the front swivel fully tightened. A slotted head is definitely required here. You probably won't find this screw at your local hardware store and will need to visit your local gunsmith.