Mac1 Airgun Distributors: "The primary customer for this gun is the 12 ft. lb. UK consumer. It must get a gob of shots at that power level. We have taken the all corks pulled model and tamed it back to a reasonable performance level so it has lots of power but is not unnecessarily wasteful & loud. The best compromise for maximum useable power and shots. We can put a stack of washers in the hammer spring pre load area so the customer can play with different power levels and charging pressures at will. It is a cinch to take apart and try different setups. Easy to tune and simple to make barrels for. "