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Evolution Iv N-Frame Hammer - Evolution Iv N-Frame Hammer For S&W Revolvers
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$166.25
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SKU: 100018577
Overview
Built for current-production Smith & Wesson N-Frame centerfire revolvers, this replacement hammer is intended for shooters who want to tune trigger pull weight through strain screw adjustment. It serves as a semi drop-in factory replacement, though minor fitting may be required. Because it removes the hammer spur, it converts the revolver to double action only, making it a practical choice for users who prefer a DAO setup. This is a focused upgrade for revolver owners who want a different trigger feel without changing platforms.
Why Hunters Choose the Apex Tactical Specialties Inc
Allows Trigger
Pull tuning by adjusting the
Semi Drop-in
Replacement for the factory hammer
Current Production
S&W N-Frame centerfire revolvers
Converts Revolver
To Double Action Only
Lacks Hammer
Spur for cocking, simplifying DAO
Key Features
- Semi drop-in replacement for the factory hammer; minor fitting may be required.
- Allows lighter trigger pull weight by adjusting the strain screw for reduced main spring force.
- Designed to maintain reliability while tuning trigger pull weight.
- Converts compatible revolver to Double Action Only (DAO).
- Lacks a hammer spur for cocking.
- Works only with current production Smith & Wesson N-Frame centerfire revolvers.
Best Used For
- Smith & Wesson N-Frame centerfire revolver owners seeking a semi drop-in hammer replacement with minor fitting possible
- Users wanting to convert a compatible revolver to Double Action Only for a simpler trigger setup
- Shooters looking to tune trigger pull weight by adjusting the strain screw and main spring force
- Current-production S&W N-Frame revolver users who do not need a hammer spur for cocking
Specifications
| Action Type | Double Action Only (DAO) |
|---|---|
| Compatibility Note | Works in current production S&W N-Frame centerfire revolvers only |
| Compatible Firearm | Smith & Wesson N-Frame revolvers |
| Firearm Type | Centerfire revolvers |
| Fitting Required | Minor fitting may be required |
| Installation Type | Semi drop-in replacement |
| Revolver Frame Size | N-Frame |
| Trigger Pull Adjustment | Adjusting strain screw for lighter main spring force |
Pros
- Allows trigger pull tuning by adjusting the strain screw for lighter main spring force.
- Semi drop-in replacement for the factory hammer.
- Designed for current production S&W N-Frame centerfire revolvers.
- Converts the revolver to Double Action Only.
- Lacks a hammer spur for cocking, simplifying DAO setup.
Considerations & Trade-offs
- Converts the revolver to Double Action Only, so it removes the hammer spur and the option to cock the revolver manually.
- Designed for current production S&W N-Frame centerfire revolvers only, so compatibility is limited to that platform.
- Semi drop-in fit may still require minor fitting, which adds an installation step beyond a simple direct swap.
- Trigger pull weight is adjusted through the strain screw, so setup depends on proper tuning rather than a fixed factory feel.
Suggested Comparisons
- Revolver trigger tuning parts
- Double-action-only revolver conversion parts
- Smith & Wesson N-Frame revolver accessories
Suggested Accessories
- Revolver action spring kit
- Gunsmithing tools
- Revolver maintenance kit
- Trigger pull gauge
Frequently Asked Questions
What revolvers is this hammer made to fit?
It works with current production Smith & Wesson N-Frame centerfire revolvers only.
Does this convert the revolver to double action only?
Yes. The description says it converts the revolver to Double Action Only (DAO) and lacks a hammer spur for cocking.
Is this a direct drop-in part?
It is described as a semi drop-in replacement for the factory hammer, but minor fitting may be required.
Can it be used to lighten the trigger pull?
Yes. The hammer is designed to let the user tune the revolver for a lighter trigger pull weight by adjusting the strain screw for lighter main spring force.
Is any performance guarantee stated?
No specific performance guarantee is given. The source says it allows trigger pull tuning without sacrificing reliability, but no detailed testing or quantified results are provided.