Universal Pistol Rear-Sight Adjustment Tool

Description

When your rear sight refuses to move and your patience runs out… this tool steps in.

This universal adjustment tool lets you precisely align the rear sight on most pistols — without resorting to a hammer, guesswork, or prayer.
It’s designed mainly for fine-tuning an installed rear sight, but with enough determination it can also be used for removal.

🛠️ Why it’s awesome

• No hammer needed — no more dings, scratches, or bruised egos
• Precise, controlled movement for perfect alignment
• Universal design that fits most pistols on the market
• Simple construction with standard M8 hardware
• Strong, reliable, and easy to print
• 120x120x20mm (4.7x4.7x0.7inch) without knobs

🧱 Printing Notes

Some sights are really stubborn.
If yours likes to fight back, print the “anvil” (the center pusher block) in a stronger material like PETG or ABS.
PLA works fine for most cases, but for tougher sights PETG is the safer choice.

🧩 Hardware Shopping List (M8 everything)

• 1 × M8 screw, 100 mm length
• 2 × M8 screws, 40 mm length
• 2 × standard M8 nuts
• 3 × M8 nylon lock nuts
• 2 × M8 coupling nuts, ~24 mm  length
• 4 × M8 washers (outer diameter ~15.8–16 mm)

Parts list:
 

Everything is easy to source and usually costs only a few dolars total.

I’ve included documentation with a detailed assembly guide and photos.

WARNING: Guide refers to M6 hardware but the right one is M8 hardware like in parts list.

🛠️ Tools Needed

• Small flat screwdriver
• Pliers or a 13 mm wrench
• Hot glue (optional but helpful for seating nuts)

💡 Tips

• Make sure the rear sight is supported evenly before applying pressure
• Tighten gradually — small steps give better control
• If your pusher block breaks… that's your sign to reprint it in PETG 😄
   

💡 How to use it?

1. Prepare the slide
   Ensure the pistol is completely safe and separated from all ammunition. Remove the slide according to your manufacturer’s instructions.
2. Access the rear sight
   Make sure the rear sight is clearly accessible and positioned so the tool can make proper contact.
3. Secure the slide in the tool
   Use the side and bottom knobs to gently clamp the slide in place. It should be held firmly but without excessive force.
4. Make fine adjustments
   Turn the main adjustment knob to shift the sight left or right. Work slowly and in small increments for the best control.

5. Recheck alignment
   After adjustment, inspect the sight position and repeat the process if needed.

    

   

❤️ Enjoy the tool!

If this model saved you from hammer drama and helped you dial in your sights the proper way, a boost would mean the world! It keeps me designing better tools for everyday shooting-gear tinkering.

Update 1 - 19.06.2026: Added alternative type of pusher for sights removal.

Disclaimer

This 3D model is provided “as is” without any warranties, express or implied. By downloading, printing, or using this model, you acknowledge and agree that you do so entirely at your own risk.

The creator assumes no responsibility or liability for any damage, injury, loss, or legal consequences resulting from the use, misuse, modification, or improper assembly of this model. It is the user’s responsibility to ensure proper materials, print settings, assembly, and safe usage.

This tool is intended for lawful purposes only. The user is solely responsible for complying with all applicable local, state, and national laws and regulations.

Use at your own risk.