From YouTube:
AirForceOne takes CO2 air pistol power to a new level with its Tai Chi, and Nigel Allen has this hard-hitting handgun on test. With .177 caliber Panther Domed pellets, it boasts a massive muzzle energy nudging 5 ft/lbs – making it one of the most powerful CO2 air pistols in production.
This test shows the AFO Taichi with two sighting options: the long eye relief PAO 2-8×32 Topaz Pistol Scope and fully-adjustable open sights incorporating an anti-flip muzzle brake.