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Site News Could You Have Stopped This? Vegas Shooting Analysis with Attorneys on Retainer
2/24/2010 3:29:26 PM EDT
I read about all i can on here in an attempt to learn, but one thing puzzles me. Some ar's are referred to as Carbines, some as Rifles. I am pretty sure this is dependant on the length of the gas system, or distance of the gas port in bore to chamber... ? Are there specific measurements that distinguish the two classifications? I was browsin around for pics and saw the 'Middy pic thread' and damned if i dont see wtf makes those ar's so 'middy' lol
2/24/2010 4:18:19 PM EDT
[#1]
Midlength = gas port is between carbine and rifle length.
2/24/2010 4:31:49 PM EDT
[#2]
14.5" Barrel, CAR length gas system:


16" Barrel, CAR length gas system:


16" Barrel, mid-length gas system:


20" Barrel, rifle length gas system:


ETA: the scales on the above pics aren't all the same unfortunately.
2/24/2010 4:35:36 PM EDT
[#3]
gas system length.  carbine 6", mid-length 9", rifle length 12".  Rough amounts from chamber to gas port.
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