Love these little subs that Hobby Boss has been putting out lately. They're immense amount of detail given their tiny size. Full hull or waterline pieces that actually fit together properly and all of the panel lines line up. Takes about 5 min to put together and that includes finding you glue and opening the tube. Only mods I did to it was to sand off the plastic railings and replace with some scrap PE railings. Also found a PE loop antennae for the sail and replaced the kit part. Those were just personal choices though. If you want to leave the plastic rails aboard simply sand them thinner and use an a very small X-acto knife or carve up a cheap nail file to get in between the stanchions and then them all down. Will look much more realistic and help to tone down the only low point (due solely to technology not manufacturer error) of an otherwise great kit. They are perfect for small scale dioramas and great for a first time diorama you could make in a weekend.