Gen 1 : Factory regulator with a 14 mm long polymere piston an | 怪物集团进口PCP共同学习频道
Gen 1 : Factory regulator with a 14 mm long polymere piston and 8 mm diameter belleville springs. Gen 2 : Factory regulator with a 16 mm long polymere piston and 8 mm diameter belleville springs. Gen 3 : Factory regulator with a 16 mm long polymere piston and 10 mm diameter belleville springs (current model)
