Tuning Mystery puff of air from a Maverick

Hi

Although it does not affect the operation of the Maverick at all, is it normal or is it a problem ????

Regards 

Enkey

If my thoughts would be indeed the case, it is a design feature, and not a problem.

The displaced air needs to go somewhere when the hammer is rushing forward, it will escape through that hole.

But in all honesty, if the valve stem would not seal properly, the leaking/escaping air from the valve stem would also bleed through that hole. That's why it is so difficult to judge this effect by reading text.