Brownells Brownells Brownells 75th Anniversary - A Shooting Heritage

  • Machined 416R Stainless steel hardened to 40-42 HRC
  • Cut Broached rifling that accepts both jacketed and lead bullets
  • Barrels are chambered for full case support
  • Easy drop in upgrade with occasional minor fitting required
  • Includes manufacturer's guarantee

Liven up your 40 Smith and Wesson with the drop in Storm Lake Barrels 357 Sig conversion kit . This precision barrel will convert your 40 Smith and Wesson pistol to the hot 357 Sig ammunition in seconds -- and you can do the conversion yourself. All barrels are machined from 416R stainless steel and hardened to 40-42HRC. Cut Broached rifling accepts all types of bullets and remains deadly accurate. Made in the USA by Storm Lake Barrels, all barrels include the manufacturer's guarantee of quality.

SPECS: Machined 416 stainless steel, Cut Broached rifling, 357 Sig caliber, drop in conversion kit.


Ships from Manufacturer. Additional processing time required. Please allow for 120 additional business days for shipping.

Caliber: 38/357 Caliber (.357-.359)

Barrel Weight: 1 lbs

Finish: Stainless Steel

Style: Conversion, Ported