Spyder E-99, J&J 12inch Ceremic Barrel, Bob Long Bolt, Spoon Drop Forward, VL12volt Revvy, Sweet Spot Trigger, Pure Energy 20oz with Anti-syphon and Smart parts on/off
easy to use, dependable
none that I can think of
This is probably the best investment that I have made regarding my marker. I do not lose air, and it is very easy to use. 1/4 turn and it is on, 1/4 and it is off. Plus with the anit-syphon installed, no water in the marker. I would recommend this to anyone.
Go get this, saving air, and saving o-rings. For the price of less than 20 bucks, you can save alot. I will have an on off put in all might tanks from now on.