CONSTRUCTION 7/10 - The K-15 is made of quality materials and despite its size doesn't have that cheap crappy feel. It can take more then a few good smacks against random door frames and car doors and other objects that seem to be part of the daily grind. Surprisingly it can be submersed for a limited amount of time and still works great. If there is any complaint it's the batter life and the temp on switch which will require replacement after consistent use so you mite want to get a back up.
DESIGN 3/10 - nothing special about the design, it's a compact laser weapons site.
DURABILITY 6/10 - It has held up despite being bashed against everything have come in contact with over the last 6 months.
OVER ALL IMPRESSION 6/10 - The cost in regard to results makes this a nice little piece of kit for any active shooter. It is highly visible even over distances better then 300 meters. It is compact which means you don't have to remove it from your weapon system when you store it. Over all it's a laser site and it works.