The internal sub build looks great just needs to be better designed.
The internal sub build looks great, and the sub skin makes the sub look great the instructions to build were really good except for trying to differentiate between dark Grey and Black. the reason I did not give it a 5 are some of the parts inside had a single connection point and kept falling off as I build if they connected to the bottom and the top they would have stayed in place and also putting the outer shell on is extremely difficult, I think the designers' besides making the model look good should also give more care to making the parts stable. the price was good and was worth trying your company and if they fix the sturdiness of the build I would consider buying them over LEGO but that being said I will buy more that the designs ae not offered by LEGO.