Ed Brown Products M&P Threaded Barrel Smith & Wesson .357 Sig 4.75in 1-10 Twist 1/2 x 28 Thread Stainless 4.25in. Customized with our own Ed Brown Tread Flutes. Our match barrel with traditional rifling will digest jacketed and lead bullets alike with exceptional accuracy and reliability. To make sure we have included it all it comes equipped with 1/2 x 28 threads and a custom thread protector making it fully suppressor ready. Overall length of the barrel is 4.75in. Specifications for Ed Brown Products M&P .357 Sig Threaded Barrel: Manufacturer: Ed Brown Products Color: Stainless Barrel Length: 4.75 in Threads per Inch: 1/2x28 Barrel Twist Rate: 1-10 Caliber: .357 SIG Gun Make: Smith & Wesson Gun Model: Smith & Wesson M&P Condition: New Package Contents: Ed Brown Products M&P .357 Sig Threaded Barrel What firearm models does the manufacturer say Ed Brown Products M&P .357 Sig Threaded Barrel is compatible with? The manufacturer says that Ed Brown Products M&P .357 Sig Threaded Barrel is compatible with Smith & Wesson M&PEd Brown Products MP-BR-SR-SS-357: M&P Threaded Barrel Smith & Wesson .357 Sig 4.75in 1-10 Twist 1/2 x 28 Thread Stainless 4.25in