Things I liked: . I love this pistol it packs a wallop and is very accurate and the 3 pumps are no problem. Pay no attention to the reviewer that seems to think there are parts made of plastic on the inside there simply black metal like the barrel if he had his hands on 1 he would know that I hate when stupid people review products especially in great length. If you want a very powerful accurate pistol this is the 1. I like the older version because it's faster than the standard model. You can tell by looking at the picture but the extra long barrel has a sleeve that slides over the barrel inside and is removable the sleeve that is not the barrel what I did is fabricate a replacement sleeve with a weaver mount on top and what I did was Mount a mini laser called laser max micro it puts the path of the bullet and the laser less than a half inch apart so I have a lot longer range of accuracy. The laser wasn't cheap and granted not most have the capacity to make a mount that fits on the end of the gun but trust me it's awesome I can simply hold a gun without even looking down the site anywhere from 10 feet to 80 feet away and hit the target.
Things I would have changed: The only downside I can think of is the extended barrel makes it difficult to find a laser or flashlight that will mount underneath the gun without interfering with the full cocking motion granted I mounted my mini laser max to the end of the barrel I would still like to find a small flashlight to mount underneath the gun but I have had a hard time finding 1 small enough.
What others should know: Only that you better be sure whatever excess you Buy to mount underneath the gun will fit because there aren't many that will