Mixed feelings about this conversion - Adaptive Tactical Venom Shotgun Box Magazine Conversion Kit, Mossberg 500 Series Shotguns

Great idea for a conversion... BUT: 1. Not as easy to install as some reviews make it out to be. Drawings are not the best and even watching the YouTube video link doesn't give a good view of the details. 2. Threads on the Magwell tube assembly did not want to screw into my receiver. At first I thought it was because mine was an early Mossberg 500, but it turns out the threads on the tube were full of powder coating. It took some searching on the Internet to find the answer which was to clean them with acetone. 3. Yes, it will feed shells from the box magazine, but so far it takes a very sharp, hard pull in order to get them to feed correctly every time, maybe this will improve with use? 4. I do NOT recommend the 10-round box magazine as it make the shotgun handle very clumsily; I would probably go with the 10-round rotary magazine.
All in all time will tell if this was a worthwhile product.