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

This Action Enhancement Kit with Tank Tread Commander Hammer resolves the inherent stacking, heavy pull, and inconsistent reset common to the Springfield SA-35 and Browning Hi-Power trigger systems. By replacing the factory sear, hammer, trigger, and sear lever geometry with matched, precision-machined components, this kit delivers a clean, crisp break with a measurable reduction in pull weight and a short, positive reset. The billet steel wide flat trigger improves leverage on the pivoting system, while the Tank Tread Commander Hammer eliminates hammer bite and provides a positive thumb purchase. The Mk 1 Balanced Sear is pre-matched to the hammer hooks, removing the need for stoning or manual engagement adjustment.

Compatibility

• Springfield SA-35 (all variants)
• Browning Hi-Power Mk I (Belgian and assembled)
• Browning Hi-Power Mk II (FN-produced)
• Browning Hi-Power Mk III (FN-produced)
• Does not fit Argentine FM 90-series or clones without verification

Key Features

• 0.31″ wide flat trigger face—allows lower finger placement for improved mechanical leverage on pivoting triggers
• ArmorLube™ Duplex DLC finish (matte black)—high corrosion, abrasion, and wear resistance
• Tank Tread Commander Hammer—checkered cocking surface, integrated over-cocking limit pad, spur angle designed to prevent hammer bite
• Mk 1 Balanced Sear—nose geometry matched to hammer hook profile; no stoning or engagement surface alteration required
• Balanced Sear Lever with Sear Lever Spring—addresses inertia-related rotation issues found in the original Browning sear lever design
• All components machined from billet steel

Install Difficulty: 3 out of 5

Requires detail stripping of the SA-35 or Hi-Power frame and slide. Tools needed: 1/16″ punch, 3/32″ punch, nylon hammer, bench block, and a small flathead screwdriver for sear lever spring installation. Recommended for experienced armorers or gunsmiths familiar with the Browning Hi-Power trigger system. Approximate time: 45–60 minutes.

FAQ

Will this kit reduce the factory pull weight significantly?

Yes. The matched sear and hammer geometry typically yields a pull weight reduction of 2.5–3.5 lbs over factory, resulting in a 4.0–5.0 lb trigger pull depending on spring selection. The break is clean with minimal creep.

Does the wide flat trigger affect holster compatibility?

No. The trigger does not extend beyond the trigger guard profile. Standard leather, Kydex, and competition holsters for the SA-35 and Hi-Power will retain proper fitment.

Is the Tank Tread Commander Hammer compatible with factory safeties?

Yes. The hammer spur angle is designed to clear the factory thumb safety and frame-mounted safeties on all listed platforms. No modification to the safety engagement shelf is required.

Shipping & Warranty: This kit ships within 1 business day via USPS Priority Mail. Covered by a limited lifetime warranty against manufacturing defects—no warranty on wear items (springs, sear engagement surfaces) after 5,000 rounds. Return policy: unopened kits accepted within 30 days; installed components not eligible for return.