Another example of a modular firearm system is the increasingly popular quick barrel change systems, which is found on some new rifles like for example the Blaser R8, Roessler Titan and SIG Sauer 200 STR. These systems simplify the replacement of worn barrels or caliber changes, since they often only require the use of a hex key, thus eliminating the need for special tools and custom fitting by a gunsmith.
* Small Arms Survey (30 August 2012). Small Arms Survey 2012: Moving Targets. Cambridge University Press. pp. 246–. ISBN 978-0-521-14687-6. 978-0-521-14687-6 ↩