Things I liked:Worked great and shot straight right out of the box (I did get the 10 for $10). Plinked off 4 cylinders before swapping out to the steel breech (has a 3/8 dovetail). Installed a muzzle break (absolutely unnecessary but looks great), a Crosman power adjuster, and a basic red dot and am shooting groups covered by 50 cent pieces at 50 feet. Anything from 50 to 70+ shots per cylinder (depending on how it is adjusted).I still have the stock 7.75 inch barrel but will be switching to a 14.5 inch barrel soon. I could have bought it all prebuilt from the Crosman specialty shop but I am really enjoying doing all the mods myself. It is sooo easy to work on. I will probably get a modified boss valve in the near future. I can already see myself switching to a bulk tank CO2 in the farther future and I have already started looking for machined repeater breech (fingers crossed), this gun is seriously fun to shoot and I've blown through 40 cylinders in a flash. Ha, I thought I would save money with a pellet gun instead of shooting my hand guns but I have only found a new addiction. I will be making a custom set of grips.This is a great addition to anyones collection. I will post pictures when finished. Things I would have changed:Maybe offer the same platform in a larger caliber ( would love 9mm). What others should know:Fun, Fun, Fun!