Quote:
Originally Posted by Excalibur
So none of the early colt carbines had burst?
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http://en.wikipedia.org/wiki/AR-15_variants
This chart says that the models 733A, 734A, and 735 (all of which were 11.5-inch barrel models) had burst.
Also, I think there may be a typo in this chart, because I'm pretty sure I remember reading that the Model 725B also fired burst. I'll have find my copy of the book that this chart comes from to be sure.