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. Read full article here: https://www.replicaairguns.com/2018/8/28/umarex-glock-19-co2-bb-pistol-field-test-shooting-review Buy the Umarex Glock 19 CO2 BB Pistol in Canada: https://www.replicaairguns.ca/glock-19-177-caliber-co2-steel-bb-airgun Buy the Umarex Glock 19 CO2 BB Pistol in the US: https://www.replicaairguns.us/glock-19-177-caliber-co2-steel-bb-airgun