Sig Sauer115861257
Sig Sauer P229 Conversion Barrel - .357 Sig to .40 S&W, 3.9" Steel Blue, 1:15 Twist$164.38
Availability: In Stock
The Sig Sauer P229 Conversion Barrel in .357 Sig gives your favorite duty or carry pistol a new life. If you already run a P229 in .40 S&W, this drop-in barrel unlocks a second caliber without buying a whole new gun—just swap the barrel and load the right magazines. The .357 Sig pushes a lighter, faster round that many shooters prefer for its ballistics and recoil characteristics, and this factory Sig barrel delivers the accuracy and reliability P229 owners have come to expect.
The 3.9-inch barrel is hammer forged and heat treated for durability and consistent performance. The 1 in 16-inch twist rate is optimized for .357 Sig ammunition. Steel blue finish matches the classic P229 look and offers solid corrosion resistance for daily carry or range use. Installation is straightforward: field-strip your P229, drop in the new barrel, and you're ready to run a completely different ballistic platform from the same platform you know.
Whether you're a competition shooter chasing flatter trajectories, a practical pistol enthusiast exploring what works best for your needs, or someone who likes the flexibility of a true multi-caliber setup, this conversion barrel is a smart alternative to carrying or storing two separate handguns. P229 fans especially appreciate Sig's commitment to making their platform genuinely modular—this is the real deal, not an afterthought.
| Caliber | .357 Sig |
| Barrel Length | 3.9 inches |
| Twist Rate | 1 in 16 inches |
| Material | Steel, hammer forged |
| Finish | Steel blue |
| Compatible Platform | Sig Sauer P229 |
Yes, this is a drop-in conversion barrel designed for standard Sig Sauer P229 handguns. It's a factory Sig part made to their specifications.
Field-strip your P229, remove the factory barrel, drop in this .357 Sig barrel, reassemble, and load .357 Sig ammunition. You'll also need .357 Sig magazines for reliable feeding, as .40 S&W magazines are not recommended for .357 Sig use.
The .357 Sig drives a lighter bullet at higher velocity, producing a different ballistic profile and recoil impulse that many shooters prefer for accuracy and speed. This barrel lets you explore that option without buying a second pistol.
This barrel has a 1 in 16-inch twist rate, which is optimized for .357 Sig ammunition. The twist rate stabilizes the bullet in flight for consistent accuracy.
SKU: 115718362 • Width: 4.1in • Height: 1.9in • Depth: 9.6in • Weight: 0.33oz
Availability: In Stock
The Sig Sauer P229 Conversion Barrel in .357 Sig gives your favorite duty or carry pistol a new life. If you already run a P229 in .40 S&W, this drop-in barrel unlocks a second caliber without buying a whole new gun—just swap the barrel and load the right magazines. The .357 Sig pushes a lighter, faster round that many shooters prefer for its ballistics and recoil characteristics, and this factory Sig barrel delivers the accuracy and reliability P229 owners have come to expect.
The 3.9-inch barrel is hammer forged and heat treated for durability and consistent performance. The 1 in 16-inch twist rate is optimized for .357 Sig ammunition. Steel blue finish matches the classic P229 look and offers solid corrosion resistance for daily carry or range use. Installation is straightforward: field-strip your P229, drop in the new barrel, and you're ready to run a completely different ballistic platform from the same platform you know.
Whether you're a competition shooter chasing flatter trajectories, a practical pistol enthusiast exploring what works best for your needs, or someone who likes the flexibility of a true multi-caliber setup, this conversion barrel is a smart alternative to carrying or storing two separate handguns. P229 fans especially appreciate Sig's commitment to making their platform genuinely modular—this is the real deal, not an afterthought.
| Caliber | .357 Sig |
| Barrel Length | 3.9 inches |
| Twist Rate | 1 in 16 inches |
| Material | Steel, hammer forged |
| Finish | Steel blue |
| Compatible Platform | Sig Sauer P229 |
Yes, this is a drop-in conversion barrel designed for standard Sig Sauer P229 handguns. It's a factory Sig part made to their specifications.
Field-strip your P229, remove the factory barrel, drop in this .357 Sig barrel, reassemble, and load .357 Sig ammunition. You'll also need .357 Sig magazines for reliable feeding, as .40 S&W magazines are not recommended for .357 Sig use.
The .357 Sig drives a lighter bullet at higher velocity, producing a different ballistic profile and recoil impulse that many shooters prefer for accuracy and speed. This barrel lets you explore that option without buying a second pistol.
This barrel has a 1 in 16-inch twist rate, which is optimized for .357 Sig ammunition. The twist rate stabilizes the bullet in flight for consistent accuracy.
SKU: 115718362 • Width: 4.1in • Height: 1.9in • Depth: 9.6in • Weight: 0.33oz