Tikka T3X UPR Blued Tan Bolt Action Rifle - 308 Winchester - 24.3in - T3x Ultimate Precision Rifle introduces a new kind of lightweight stock construction: the bedding features an extra layer of carbon fiber mixed with fiberglass for increased rigidity and accuracy. The stock is coated with a rough surface for the best grip in any condition and has attachments for QD slings. You can choose between single stage or set trigger. T3x UPR rifles are all muzzle threaded with 5/8x24 thread.