The benefits of the Huma-Air, Evaninx Sniper tuning regulator are:
Higher accuracy of your rifle due to the elimination of the pelletspeed fluctuations
A constant pellet speed over the full working pressure range.
It will give you a better shotcount and a full flat shotstring immediately.
Adding a regulator to your airrifle will probably give you the biggest benefit in the tuning process.
Often the rifle will make less noise due to better balance in air usage
Note: No returns will be excepted on this item as it is factory set and tampering will void the warranty