if it,s a new gun , then i would exspect it to be still in guarantee or a repair with a full 12month,s guarntee.if not its up to the shop to do their best.ALL u can do is wait and see, but don,t wait to long,as you need to use it .Had same prob with the head space on my rem after a couple months couldn,t get it accurate . keep ringing to remind them to sort it out . had new gun in 3 week . best of luck