I have my eyes set on a Steyr SBS with synthetic stock and 20-inch barrel in .308. What's the difference between the Steyr SBS ProHunter and SBS Tactical rifles? I can see that the bolt handles are different, and that the bolt is blackened on the Tactical series. Their prices are very different, though. For example, the Steyr SBS Tactical is $949 ($999 for the Heavy Barrel Carbine), but the Steyr SBS ProHunter Mountain is $739. What gives?