Question: is the gsg firefly any good?
Answer: The GSG Firefly is a full size . 22LR pistol. ... The ATI GSG Firefly is about 85% the size on the Sig P226, and it has a lot of the same feel to it. It feels more substantial than most rimfire pistols such as the Walther P22 or the Ruger SR22, so it makes a good trainer for handling the bigger centerfire pistols.