Three Rivers Manufacturing Bulldog Rev. B River-Lok Magnacut Blade 3D Contoured Lizard Skin Titanium Handle
The TRM Bulldog Rev B is a compact, hard-use folder built by Three Rivers Manufacturing in Millis, Massachusetts, using 100% U.S.-sourced materials. Designed as a tougher, more robust alternative to TRM’s thin-grind platforms, the Bulldog features a thicker geometry and reinforced build for heavier daily tasks while maintaining TRM’s signature precision and smooth action.
The Magnacut full-flat-ground drop point blade provides excellent edge retention, corrosion resistance, and wear resistance. Rev B updates include improved tolerances, refined ergonomics, and enhanced hardware fitment — resulting in stronger lockup and smoother deployment. The compact frame is paired with interchangeable scales, allowing quick customization with titanium, micarta, G-10, carbon fiber, or other limited-run handle materials.
A deep-carry clip ensures discreet pocket carry, while the liner lock provides secure operation without excess bulk.
Specifications
- Blade Length: 2.95″
- Cutting Edge: 2.95″
- Closed Length: 4.125″
- Overall Length: 7.00″
- Blade Material: CPM-MagnaCut Stainless Steel
- Blade Thickness: 0.117″
- Blade Style: Drop Point
- Blade Grind: Flat
- Blade Finish: Tumbled
- Handle Material: 3D Contoured Lizard Skin Titanium
- Handle Thickness: 0.470″
- Locking Mechanism: River-LOK Crossbar Lock
- Pivot Assembly: Ceramic Ball Bearings
- Pocket Clip: Titanium (Tip-Up, Right Carry)
- Weight: 4.37 oz.
- Made in the USA






