The Mikromir kits come in thin cardboard boxes much larger than the bagged parts, which can slide around inside. So far, all the pieces are intact despite the rather loose packing strategy. The hulls tend to be rather thin plastic (1mm) and need to be butt joined carefully. No locator pins along the length to help out. Dry fit is necessary. I have found that it helps with some kits to first glue a thin plastic strip to the inside of one of the halves to help align and strengthen the join. Fine details and scribing are decent and there is usually a small photo etch piece with the propeller and a few other items. Instructions are all pictorial and can be baffling in some cases.
Some decisions made by Mikromir with the kit parts are downright baffling. Most of the screws (propellers) are the familiar one piece photo etch units, but not all! Both the Mikromir Russian Papa class and Mike class SSNs have very poor propeller construction details. You are provided with the individual photo etch propeller blades. You also get a very tiny plastic hub ( about 1.5 mm in diameter and 3 mm long) to butt glue them on to. The hub has no marks to indicate where to space the individual blades, nor any indication of the blade angle join to the hub. The visual diagram is of little use. The entire process would be very tedious and the diagram is of little help. I am currently figuring out how to use other photo etch propellers l have to substitute for these individual blades and hub assemblies. The plastic hub itself is very small, and most of us, including me, are getting too old and have visual challenges to pull off a decent construction using their semi-microscopic parts.
Overall, the Mikromir kits are inexpensive and decent in detail and accuracy. You can assemble a nice build with care and dry fitting. Someone new to modeling might find them a bit difficult due to the instruction pictographs. Most of the kits are pretty straightforward, but as l mentioned above, some of their kit assembly ideas (Mike and Papa) could use some rethinking.
I would advise that you try the Mikromir Lafayette kit. Hope this helps.