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ridgerunner70
02-01-12, 04:39
Was listening to a guy saying that there is only 2 main company's that forge upper's. One has a square and the other has a key hole symbol to distinguish between the two. Is this true?

CoryCop25
02-01-12, 04:43
Was listening to a guy saying that there is only 2 main company's that forge upper's. One has a square and the other has a key hole symbol to distinguish between the two. Is this true?

http://m4carbine.net/showthread.php?t=53789
http://m4carbine.net/showthread.php?t=5357