BBs or Paintballs fit in realistic, bullet-sized cartridges that fit in each of the six chambers in the gun. Box of 100 6mm Pellets. Ultra Grade Airsoft Pistol Manufactured by UHC. Quality Heavy Weight Construction - Metal Parts and Antishock ABS. The Mk. V revolvers from Colt company, such as Trooper Mk.V, Lawman Mk.V, first appeared in 1982, as an improved versions of the earlier Mk.III revolvers with same names. The improvements were not that radical, with major attention done to the trigger group: the main spring became longer, while the hammer path became shorter. This resulted in shorter lock time and helped to improve accuracy. Other improvements were less significant and mostly regarded to the manufacturing process.