Guns are built Southern Precision Rifles bartlein barrel: Heavy Varmint , barrel length 32 inch, 5R of Grooves, Twist 1-12, caliber 7.62X51/308w. Stiller Action: Stiller Predator short action, 308 bolt face. With 20MOA rail . Timney trigger: Timney 510-U trigger. With longer sear for...