Installation Guide

How to install the M4 to a strap with a deployant

01
Use a spring bar tool to remove the clasp from the strap.
02
Remove the spring bar from your strap loop.
03
Insert the original spring bar, or the supplied spring bar, through the narrow end of the M4.
04
Attach the clasp to the narrow end of the M4 using a spring bar tool.
05
Remove the Fitwell spring bar from the wide end of the M4.
06
Insert the Fitwell spring bar into the strap loop.
07
Attach the strap to the wide end of the M4 using a spring bar tool.
08
Adjust between the two positions and enjoy the perfect fit.

Works with most spring-bar deployants. Have a screw-attached deployant? Chat with us using the Help button in the bottom right corner to explore compatibility. A spring bar tool is required for installation.

Shop the M4 Universal Link

Designed for your existing deployant or buckle. True micro-adjustment for any strap.

The Universal Link adds 3mm of fine, on-wrist adjustment in a slim inline format. Install once, adjust instantly as your wrist changes through the day.