Things I liked:Feel weight and realism Things I would have changed:I would change the blow back system for sure, they should have made it real, (the blowback would put a bb in the chamber. all it is, is a co2 port facing backwards that meets up with a seal that is on the slide, so when you pull the trigger co2 puts a bb out the barrel and pushes back the slide from the back facing port. A little cheesy if you ask me. also the mag could have been designed better. the trigger pull is VERY hard. What others should know:My gun that I had purchased must have been very poorly made. The seal for the blowback right away broke, and fell off. I glued it back on and it sort of worked. Another thing is the magazine, the top metal spring loaded peice that keeps the bbs in until they enter the chaber quickly wore down, so my bbs would fly every where one I released the spring at the bottom. I had also tried to fix that with superglue but only lasted a short time. My trigger was EXTREMLY hard and not consisntant.