nulian, Im 5'11", and I fit Ok in the 22. However it does sem to depend on the 22. In our NVFR ship, the seat is higher than the other ships, and my helmet (SPH-5) rubs a little, meaning I have to slouch a little. I believe that the HGU- 56 (army), and the HGU - 84 (navy, marines), are a slimer profile. Other wise the alpha or the gallet may be the ay to go. The good thing about the SPH-5 is there are lots around, and available second hand.