JAG Precision take a quick look at the Modify XTC:
In this quick video about the Modify XTC Tang will install several springs and report the feet per second readings.
The great feature of the Modify XTC rifle is the true quick spring change system that can allow the user to easily install a new spring for a higher or lower FPS depending on what the field limit is. This process is made very easy since the wires are not in the buffer tube.
Find the video here:
http://www.jagprecision.com/what-springs-can-the-modify-xtc-use/
