Copied this post from HKPro.com .
Very good (not to mention very cool) visual diagram on how the HK416 functions versus the M4.
http://www.armytimes.com/projects/flash/2007_02_20_carbine/http://www.armytimes.com/projects/fl...02_20_carbine/
Very good (not to mention very cool) visual diagram on how the HK416 functions versus the M4.
http://www.armytimes.com/projects/flash/2007_02_20_carbine/http://www.armytimes.com/projects/fl...02_20_carbine/