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

Common Firearms Applications for Hex 1/16″

The 1/16-inch hex bit is one of the most widely used small Allen sizes in firearms maintenance and modification. It strikes a balance between strength and precision, making it ideal for a variety of sighting and control components.

1. Handgun Sight Adjustment

• Application:

  • Loosening/tightening rear sight set screws (especially in dovetail-style adjustable or drift sights).

  • Commonly used during zeroing or changing sights.

• Firearms: Most prominent in Glock, Smith & Wesson M&P, Sig Sauer, and CZ platforms.

• Purpose: Enables secure mounting while still allowing for adjustments and windage correction during sight-in.

2. Retention Screws in Modular Optic Systems (MOS Plates)

• Application: Securing optic adapter plates or mini red dot sights (MRDS) to pistol slides.

• Systems:

  • Glock MOS (Modular Optic System)

  • Sig P320 RX/Pro Cut slides

  • Walther PDP and Canik optic-ready pistols

• Sights: Frequently used with Trijicon RMR, Holosun, Leupold DeltaPoint, and similar optics.

• Why 1/16″?: Provides sufficient engagement to handle recoil forces without stripping, while maintaining low-profile installation.

3. Trigger and Safety System Adjustments

• Application:

  • Fine-tuning trigger shoe position

  • Setting overtravel/pre-travel limits

  • Adjusting manual safety detents or spring tension

• Aftermarket Brands:

  • Timney

  • Zev Technologies

  • Apex Tactical

  • Agency Arms

• Platforms: AR-style pistols, custom Glock triggers, and other modular systems