With a Bar-Sto Barrel, shot groups of 1-3/4" to 2" at 25 yards are possible with match grade ammo. Barrels are machined from stainless steel bar stock which has been heat treated to 180,000 psi tensile strength. May require minor fitting.Glock Model 31 357 Sig 4.49"
Material: Stainless Steel
Twist rate of 1 turn in 16".
Provides a tighter fit than the factory barrel.
May require some fitting.
Comes with a bushing, link, & pin.
All Bar-Sto barrels are machined from solid stainless steel bar stock which has been heat treated to 180,000 PSI tensile
strength (how hard it would be to tear the material, 90,000 pounds per square inch of pressure each direction).