Action Enhancement Kit w/ Tank Tread Commander Hammer for Springfield SA-35/ Browning Hi-Power

Description

The Apex Action Enhancement Kit for the Springfield SA-35 and Browning Hi-Power (Mk I and Mk II) delivers a significant upgrade to trigger performance and shooter control, engineered specifically for these classic single-action platforms. At $200, this kit replaces multiple factory components with precision-machined billet steel parts that address common issues like trigger creep, hammer bite, and gritty pull weight.

Wide Flat Trigger — The .31-inch wide trigger face is inspired by the late Jim Garthwaite’s work and provides a broader contact surface than the original Browning Hi-Power trigger. This design allows your finger to sit lower on the pivot, improving leverage and enabling more consistent finger placement. The result is a flatter, more controlled trigger pull that reduces side-to-side movement. The trigger is finished with ArmorLube Duplex DLC, a matte black coating that offers superior corrosion, abrasion, and wear resistance compared to standard DLC finishes.

Tank Tread Commander Hammer — This modern Commander-style ring hammer incorporates a checkered cocking surface for positive thumb traction during single-action operation. The spur angle and over-cocking limit pad are designed to prevent hammer bite, a common issue with factory hammers on Hi-Power and SA-35 pistols. The hammer hook geometry is precisely matched to the included Mk 1 Balanced Sear, eliminating the need for hand-stoning or adjustment of engagement surfaces.

Mk 1 Balanced Sear — The sear nose geometry is engineered to match the Tank Tread Commander Hammer hook profile. This pairing delivers a clean, crisp trigger break without requiring additional gunsmithing. The sear is a direct drop-in replacement for the factory part, reducing installation complexity.

Balanced Sear Lever and Sear Lever Spring — These components address a fundamental limitation of the original Browning design: inertia-related rotation of the sear lever as the slide returns to battery. By balancing the sear lever and biasing it away from the sear contact pad with the included spring, the kit reduces the risk of hammer follow at lower pull weights. This allows for a lighter, crisper trigger pull without sacrificing reliability.

Included Trigger Pin Removal Punch — A dedicated punch is provided to safely remove the factory trigger pin without damaging the frame. This is a practical addition for anyone performing the installation at home. Apex recommends watching their installation video before beginning the process.

Specifications and Fitment:

• Compatible with: Springfield SA-35, Browning Hi-Power Mk I and Mk II pistols (standard frame models)
• Trigger width: 0.31 inches
• Trigger finish:</