M&P Magazine Spring - 9mm/.40/.357 Sig
Factory Smith & Wesson magazine spring for M&P pistols. This precision-wound spring provides consistent tension for reliable feeding and ensures your magazine functions properly.
Features:
- Factory OEM part #278270000
- Precision-wound for consistent tension
- Ensures reliable feeding
- Maintains proper magazine function
- Direct replacement for worn springs
- New, never used condition
Compatibility:
Fits Smith & Wesson M&P magazines in 9mm, .40 S&W, and .357 Sig:
- M&P9 Full Size & Compact (1.0 and M2.0)
- M&P40 Full Size & Compact (1.0 and M2.0)
- M&P357 Full Size & Compact (1.0)
Installation:
Requires magazine disassembly. Basic gunsmithing skills recommended for proper installation.
Factory replacement parts are manufactured to exact specifications and tolerances using the same materials as original equipment.