Compability : Scoprion Evo 3 A1 / Carbine / carbine B.E.T. Designed specifically for the ASG Scorpion Evo A3 A1 replacing the existing adjustment wheel for an easier and precise hop-up adjustment on the go. - Adjust the Hop-up with ease with or without gloves anywhere. - Stronger gear system to keep hop-dial in place - Finer, more precise hop-up adjustment - No more need to carry an Allen key during games - made from strong durable Nylon
