Description
Wilson Combat's Bullet Proof line has a reputation among 1911 builders for a reason, and this concealment hammer is a great example of why. It's fully CNC machined from solid stainless steel bar stock and heat treated to R/C 48-52, so you're getting a part cut from billet rather than a cheap casting or injection-molded piece. The stainless finish gives it a clean, professional look that blends right into a carry-focused build, and the skeletonized spur keeps weight down for the fastest possible lock time.
What Sets the Concealment Hammer Apart
The whole point of a concealment hammer is a lower profile that rides closer to the frame, which means less to snag on a cover garment during the draw. This one is designed to pair up perfectly with Wilson's Concealment beavertail grip safety, so if you're putting together a dedicated carry 1911, the two work as a matched set. The narrow spur is the tradeoff for that slim profile, and it's exactly what you want when the gun spends its life inside the waistband.
Built for a Clean Trigger Job
This is where the Bullet Proof hammer earns its keep. The hammer hooks are cut to .020 inch with an 8 RMS ground finish, and there's a narrow half-cock notch engineered to protect the sear nose from damage. The strut pin hole is located precisely to help you dial in a light, crisp trigger pull. Builders often run it alongside Wilson's Ultralight Trigger and Deluxe Sear for a complete trigger package.
Fitting the 337SC to Your 1911
While Bullet Proof parts are made to tight, consistent tolerances, minor fitting is expected with any quality 1911 ignition part because frame and slide tolerances vary from one maker to the next. This is not a job to rush. If you're not comfortable stoning sear and hammer surfaces and running your safety checks, hand it off to a qualified gunsmith so it goes in right and stays safe. Done properly, this hammer helps deliver the kind of ignition and trigger feel Wilson pistols are known for.
Key Specifications
- Manufacturer: Wilson Combat
- Manufacturer Part Number: 337SC
- Model: 1911 Commander / Government / Officers
- UPC: 874218006044
- Type: Concealment Hammer
- Material: Solid Stainless Steel, CNC Machined
- Finish: Stainless
- Hardness: Heat Treated R/C 48-52
- Hammer Hooks: .020 inch, 8 RMS Ground Finish
- Spur: Skeletonized, Low Profile
- Pairs With: Wilson Combat Concealment Beavertail Grip Safety
- Fitment: Minor fitting required
- Country of Origin: Made in USA
What’s Included
- Wilson Combat Bullet Proof Concealment Hammer (Stainless, 337SC)
- Wilson Combat factory packaging
Frequently Asked Questions
What 1911s does the Bullet Proof Concealment Hammer fit?
It's designed for 1911-pattern pistols, including Government, Commander, and Officers frames. Because tolerances vary between manufacturers, expect some minor fitting during installation. It's a popular upgrade for both Colt-style and custom 1911 builds.
Do I need a gunsmith to install this concealment hammer?
Wilson lists minor fitting as required, and any 1911 ignition part touches on safety-critical surfaces like the hammer hooks and sear engagement. If you're experienced with 1911 trigger work and can run proper safety checks, you can fit it yourself. If not, a qualified gunsmith is the way to go so it functions safely.
Why choose a concealment hammer over a standard skeletonized hammer?
The concealment hammer has a lower, slimmer spur that rides closer to the frame, which cuts down on snagging when you draw from concealment. It's built to match up with Wilson's Concealment beavertail grip safety for a clean, snag-free profile. The tradeoff is a smaller spur, which is a bit tougher to thumb-cock, but that's expected on a carry-oriented setup.
Will this hammer give me a better trigger pull?
It's built to support one. The hooks are cut to .020 inch with an 8 RMS finish and the strut pin hole is precisely located to help achieve a light, crisp pull. For a full trigger job, many builders pair it with Wilson's Ultralight Trigger and Deluxe Sear, though the final pull weight comes down to proper fitting.





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