The Umarex Smith & Wesson 327 TRR8 is very similar in design to the ASG Dan Wesson revolver line, the frame is virtually identical and you can even use the same shells and speed loaders between the two revolvers. The Umarex 237 TRR8 is licensed with Smith & Wesson branding on it and has a different barrel which in my opinion feels heavier in design over the ASG Dan Wesson. The S&W 327 TRR8 shoots 4.5mm Steel BB's using 12 gram CO2 and can reach 400 fps. It also has a single and double action trigger with adjustable sights.