Barrett M468
Encyclopedia
The 6.8 SPC chambered Barrett M468 rifle employed the same direct gas-impingement system as the M4
M4 carbine
The M4 carbine is a family of firearms tracing its lineage back to earlier carbine versions of the M16, all based on the original AR-15 designed by Eugene Stoner and made by ArmaLite. It is a shorter and lighter variant of the M16A2 assault rifle, with 80% parts commonality.It is a gas-operated,...

. The result was a system that jetted hot gases directly into the rifle’s receiver, leading to potential stoppages if regular maintenance and cleaning protocols were overlooked. Barrett was still selling its limited stock of the M468 but only as an upper receiver kit and not as a complete rifle up until 2010.
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK