Same deal, no helmet. Maybe this was done because of the so called "Reach excitement"? Nah, I've been planning on this for awhile now.
And the rifle? Thats not your normal Halo SRS99D-S2 AM, but an older model called "SS14M-A7", a long range sabot charge anti personell rifle. (Yes, completely black and you can even see the bolt cover in chrome.)
Yeaaaahh.. I am aware of that this gun does not actually exsist in the Halo universe. But hey, the sniper family is so epic, then why the hell wouldn't we let another one join the fun?
And besides, Halo is fiction. If you can't accept a little fiction to fiction, then you're a hypocrite who does not understand the real world.