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Sig Sauer P320 Compact Conversion Barrel - .357 Sig

Sig Sauer P320 Compact Conversion Barrel - .357 Sig

Converts your P320 Compact from 40S&W to 357SIG or replaces your original 357SIG barrel. These are factory Sig Sauer drop-in barrels. Black finish.

* NOTE * All barrels may require minor fitting.


In stock


Sig Sauer Barrels

When you buy one of the factory-made Sig Sauer Barrels, you receive a part that’s precision hammer forged for accuracy and long life. Sig’s replacement barrels are manufactured to last as they meet discriminating standards. Each factory barrel has been heat-treated to ensure rugged durability. Sig conversion barrels allow you to switch your caliber quickly while supporting fit and function. Whether you need drop-in Sig Sauer barrels in various styles for P220 replacements or a conversion barrel for the P226, our site has you covered with barrels that live up to their reputation for toughness.

Drop in Sig Sauer Replacement Barrels for a Factory Fit

Unwrap authentic, factory-issued parts. Order genuine Sig Sauer Replacement Barrels from Top Gun Supply. Upgrade your older P6 with a new blued barrel direct from the factory, featuring an enhanced feed ramp for improved functioning. With Sig Sauer parts designed to exact specifications, you can quickly change the barrel on your favorite 9mm pistol. We also carry threaded replacement barrels and thread protectors, as well as barrels for Sig Pro owners. Check product information to confirm the Sig Sauer replacement barrel you’re ordering is correct, or contact us for superior customer service.

Try a New Caliber with Sig Sauer Conversion Barrels

Take your pistol into a new caliber without modifications. Sig Sauer Conversion Barrels easily convert a P series 226, 239, or 229 from original 357SIG to 40S&W, or vice-versa, with high quality drop-in barrels. You’ll be assured of a great fit and superior functioning when you choose Sig Sauer conversion barrels. Also, our stainless steel Sig Sauer threaded barrel assemblies are specially designed for installation on 22 conversion kits that help you save on ammo and sharpen skills. As with any gun part, Gunsmith fitting may be required.