Things I liked:The weight and balance are great! Things I would have changed:Make the stock connection out of metal and not plastic or a much more sturdy grade of plastic.
Make the Clip a functional part of the gun and not just a storage bin. If not then give us a bigger clip to store more pellet clips! Make the Picatinny rails out of metal not plastic same with the parts of the barrel that are visible for ruggedness. Fatten the grip so that it is flush with the lower receiver or offer rubber-ish grip cover option. Hollow out the grip as it is one the real M4 to save weight. Spring the BB magazine so it is not necessary to flip and shake the gun to get BBs to gravity feed into the breach, after pumping. The pellet clip should move to the next pellet slot automatically as a part of the bolt action, this should not be a manual thing to move! It is difficult to move manually by it's tiny handle. Make the pellet mag clear or make it so that a shooter can tell if they actually loaded a pellet into the breach! All of that pumping and aiming just to shoot air is annoying! What others should know:Don't let this gun fall at all on it's stock! Or you will be replacing it! Use at lease 5 pumps to get relatively consistent accuracy at 20+ft. Don't over tighten any devices to the picatinny rails.
Things I liked:The styling is fantastic and the gun is lightweight.
The pump action is simple once you get used to it. It is an accurate and powerful pump action gun. Things I would have changed:I would put a little more metal on the surface of the gun for things like the rails, the reciever and the barrel. This would give a better sense of ruggedness.
I would also make the magazine removable as a storage compartment as was done on it's AR15 cousin gun. I would love to have a moving cheek rest but that may a bit much for this gun. What others should know:If you put an optical or red dot sight on this gun be prepared to get a picatinny riser for it as the stock is almost parallel to the top rail. As such, up your sight line may be too high for a standard mounted sight.
Things I liked:This is just a fun gun period. The weight and balance are perfect for what this gun is. Things I would have changed:I would like adjustable sites and aluminum rails.
I would like to have the ability to attach a skeleton or folding stock to the gun because it just begs to be shot as a sub machine pistol. What others should know:BB loading into the magazine takes some patience and a certain angled horizontal-ish plane (front to back) shaking motion to fill it back up. Also removing the faux magazine reservoir takes some practice and patience.