Those guns are not like the BAR 10 at all. Since they are new, and the first version from that company, they have some flaws including a weak hop-up arm, obviously the weight, and a few others. The gun is Maruzen APS2 compatible though so you can use all of their upgrade parts except the trigger. Overall, from all of the reviews I have read on it, it is not a good gun for the money compared to a BAR-10 or VSR. It just looks cool basically. The weight makes it very very unpractical.