In 1994 Geoff Darvill came up with the idea of using the air cylinder of a pre-charged rifle as the stock instead of placing in front of the rifle. This meant the balance of the rifle was better because the weight was to the rear and gave the possibility of greater efficiency because the tank was in-line with the barrel. He teamed up with John McCaslin based in Texas to design and improve the idea.
Köp till Fyllnippel eller spinnlock ventil med snabbkoppling och manometer