http://www.usni.org/magazines/proceedings/2010-07/what-really-happened-wanat
Many US soldiers have complained that their colt rifles often jam from overheating after just a few mags of full auto, colt admits that barrel failure will occur if 90 rounds per minute is achived for around 550 rounds.
this commercial barrel did 830
Many US soldiers have complained that their colt rifles often jam from overheating after just a few mags of full auto, colt admits that barrel failure will occur if 90 rounds per minute is achived for around 550 rounds.


















































