Borka® bits are made of S2 tool steel and are known for exceptional toughness and resistance to breakage.  

Common Firearms Applications for Hex .050"

1. Fiber Optic Front Sight Set Screws

• Application: Secures the fiber optic rod or inserts in front sights, especially on competition pistols or some precision rifles.

• Brands: Dawson Precision, Hi-Viz, TruGlo, and other target sight manufacturers often use tiny set screws for rod retention.

• Reason: Allows for easy fiber replacement while maintaining secure, rattle-free hold under recoil.

2. Trigger & Safety Adjustment Screws

• Application:

  • Overtravel screws

  • Pre-travel screws

  • Reset tension screws

  • Safety engagement/disengagement tuning

• Common in: Aftermarket or match-grade triggers (e.g., Apex Tactical, Timney, CMC, and some custom 1911s or CZs).

• Why .050”: These micro-adjustments allow shooters to finely tune trigger feel, reset, and engagement — crucial in competitive shooting.

3. Internal Micro-Adjustments in Tuned Triggers

• Application: Used internally for:

  • Sear engagement tuning

  • Trigger bar positioning

  • Spring preload tweaks

• Examples:

  • 1911 match triggers

  • CZ Shadow 2 custom setups

  • SIG P320 aftermarket modules

4. Other Niche Uses

• Compensator retention screws (rare but seen in very compact compensators)

• Trigger shoe attachments for modular match triggers

• Small optics accessories, like illumination modules or retention clamps on red dots or fiber setups