SI Defense Barrel LR-308 308 Winchester 20" M110 SASS Contour 1 in 10" Twist Matte

Product #: 814978 SI Defense #: SI AR-B-SASS-308-20
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  • Information
SI Defense LR-308 barrels are made from 4140 chrome moly steel and use button rifling. The barrel is chambered in 308 Winchester with a 1 in 10" twist. The M110 SASS profile is heavy under the handguard and .875" at the gas block. The muzzle is threaded 5/8"-24 to accept muzzle brakes, flash hiders, or a suppressor. The barrel is finished with a mil-spec manganese phosphate finish. This barrel is compatible with DPMS LR-308 Bolt assemblies and other parts.

Technical Information:
  • Barrel Length: 20"
  • Barrel Weight: 4 Pounds 2 Ounces
  • Material: 4140 Chrome Moly Steel
  • Twist Rate: 1 in 10"
  • Chamber: 308 Winchester
  • Contour: M110 SASS
  • Chrome Lined: No
  • Gas Port Location: Rifle
  • Barrel Diameter at Gas Port: 0.875"
  • Muzzle Thread Pattern: 5/8"-24
  • Finish: Mil-Spec Heavy Phosphate
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