When the GSG5 came out I liked the way it looked and bought one, did the same thing with the Colt/Umarex M4. Both were fun to shoot and reliable but, I was really turned off by the interior design of both. They required tools to take apart and the GSG5 had screws that needed replacing. The Colt was unbelieveable to take down, 1'st you had to unscrew the flash hider then use a punch to drift the takedown pin put. Once opened, parts that were there only for decoration fell out and you could not remove the bolt or carrier. You basically had to just spray the innards with Gun Blaster to try to get it clean. Then the Smith & wesson M&P15-22 came out and what a difference, everything functioned just like a centerfire AR, and takedown was a breeze. I bought an early M&P and it has functioned flawlessly for 2000 rounds. I like this rifle so much I just bought another one with the factory installed flash hider which really looks neat. Sig Sauer came out with their 522 and this too is a quality rifle so I bought one of these too. If it proved as reliable and accurate as the M&P 15-22 I will be happy. So after having experience with 4 different tactical 22s the S&W and the Sig are my two favorites.