Smith & Wesson M&P Shield Magazine Spring - .40 S&W
Factory OEM Part #422190000
Genuine Smith & Wesson factory magazine spring for M&P Shield .40 S&W magazines. Essential component for reliable magazine feeding.
Key Features:
- Factory OEM quality
- Precision-wound for proper tension
- Ensures reliable cartridge feeding
- Direct replacement spring
- Universal fit for Shield .40 magazines
Compatibility:
✓ Compatible with:
- M&P Shield .40 S&W magazines (1.0 & 2.0)
- Fits 6-round and 7-round magazines
Function:
The magazine spring provides the upward force needed to present cartridges to the slide for reliable feeding. Critical component for magazine function.
When to Replace:
Replace if experiencing feeding issues, if spring shows signs of weakening or compression, or as part of regular magazine maintenance. Magazine springs are wear items that should be replaced periodically.
Maintain reliable feeding with genuine Smith & Wesson factory magazine parts.