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