Smith & Wesson M&P Shield 40 Barrel - 2.97"
Factory OEM Part #421850000
Genuine Smith & Wesson factory barrel for M&P Shield .40 S&W pistols. Precision-manufactured 2.97" barrel with factory rifling and finish.
Key Features:
- Factory OEM quality and precision
- 2.97" barrel length (standard Shield .40)
- Precision button-rifled bore
- Factory Armornite finish
- Includes locking lugs and hood
- Direct replacement barrel
Compatibility:
✓ Compatible with:
- M&P Shield .40 S&W 1.0
- M&P Shield .40 S&W 2.0
✗ NOT compatible with: 9mm or .45 ACP Shield models (different chamber and bore dimensions)
Specifications:
- Caliber: .40 S&W
- Length: 2.97 inches
- Finish: Armornite (corrosion-resistant black finish)
- Rifling: 1:18.75" RH twist
When to Replace:
Replace if barrel shows excessive wear, pitting, bulging, or accuracy degradation. Barrels are high-wear components on high-round-count pistols.
Maintain accuracy and reliability with genuine Smith & Wesson factory barrels.