The SR9T has enhanced features over the HK91, polygonal bore, trigger group, and stock. The PSG1 was designed from the ground up as a precision semi auto gun. If someone is convincing you to buy an SR9T because it's just as good or better than the PSG1, take that with a grain of salt. Some shooters will not exploit the full potential of their guns because it takes time and money to get out and practice. Board member here (Kobra) can shoot his Springfield SAR3 (HK91 clone) and keep five shot groups under 3/4" at 100 yards with iron sights, the boy can shoot.Is the PSG-1 that more accurate than an SR9T?