Low cost CO2 BB guns are not really known for their power and accuracy but sometimes they can actually test out pretty decent. I don;t expect a replica action shooter to be the best shooter but as long as it can get a relatively small grouping and pump out 4.5mm Steel BB's over 400 fps then that's good enough for me, at least with a non-blowback CO2 BB Pistol.
Starting off with my velocity test using my newly acquired Caldwell Ballistic Precision Chronograph, I was able to get a little higher then the 410 factory claimed fps for the Umarex Glock 19 CO2 BB Pistol with an average of 423 fps. This was with a slightly used (A couple of magazines shot already) but fully warmed up CO2. I was shooting in about room temperature settings so not too warm and not too cold.
Next I placed 10 shots with my Umarex Glock 19 CO2 BB Pistol from 30 feet down range using my standard seated and rested shooting position and shot about a 1-1.5 inch 10 shot group with only one shot coming out a bit extending the range to the full 1.5 inches. The Umarex Glock 19 CO2 BB Pistol did seem to shoot a little bit high and to the left but not by very much and perhaps it was a little bit because of the shooter?
I think the low cost Umarex Glock 19 CO2 BB Pistol is a great choice for anyone looking for a licensed Glock BB pistol to get some trigger time with for pennies a shot and without having to always go to a gun range to shoot. The Umarex Glock 19 CO2 BB Pistol feels and holds pretty much the same as a real Glock 19 and even has a similar trigger feel, maybe not 100% but in the ball park. Sure you will not get that simulated recoil since there is no blowback but you do get a lot of shots per CO2 and more power than most CO2 Blowback pistols.