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.Sig Sauer Model P220 45 ACP 4.4"
Material: Stainless Steel
Twist rate of 1 turn in 16".
Provides a tighter fit than the factory barrel.
Semi-Drop-In barrels may require minor fitting. Due to
close tolerances and variances in handguns some barrels may require fitting. Most Semi-Drop-In
barrels will drop-in without minor fitting.
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).