You will get used to it . Im 6'4" and at first I felt the same way . Now they all fit like a glove . There right all you can do is put a bigger but pad on it , I did and it helped . You have to remember its a multi use gun . It needs to be compact for urban environments as well as be able to engage long range targets . There has to be a little trade off . My Del-Ton (the dark earth one in the pictures )felt very compact and not very comfortible but as soon as I put that front grip on it .OMG It feels sssooo good . Give it time It should not take long .
P.S. lets see some pics it's time to show off the new member of the family