The Wilson Combat 423B Ambidextrous Thumb Safety is a high-ride, blued alloy safety designed for 1911 pistols. Both levers are extended, wide and angled downward to provide a comfortable thumb rest for shooters who prefer a high thumb. The design permits rapid operation of the safety and offers a slightly wider right-side lever for left-handed shooters who want additional purchase. The part is specified to fit A thru O 1911 frames.
Key Specifications
- This component fits A thru O 1911 frames.
- The finish is listed as Blued.
- The material is specified as Alloy.
- The product type is Safety.
- The model designation is Thumb Safety.
- The hand orientation is Ambidextrous.
- The listed dimensions are 0.60 X 2.95 X 4.45 (units not specified).
- The listed height value is 0.6000 (units not specified).
- The listed length value is 4.4500 (units not specified).
Engineered to Wilson Combat standards, the 423B provides ergonomic control without altering the core function of a 1911 thumb safety. Its extended, angled levers improve thumb purchase and allow quick, reliable manipulation, making it a practical upgrade for shooters seeking improved handling on compatible 1911 frames.





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