Things I liked: I really love this gun if is heavy and very reliable I can get about 30-45 shot's of with one mag charge of green gas don't use propane with this gun it is inefficient , the only problem I had was the mag.....
Things I would have changed: Nothing on the gun, but the "kjw" mag's do _NEED_ lubricating you should put a drop on the gas fill valve and all around the base plate part that connect to the mag and a little in the port if you plan on storing don't be scarred to but this because the mag leaks all you have to do it keep it clean and lubricated other then thy five star gun! It is a sig sauer! (:
What others should know: Clean and lube gun after every use