Model 727 = early M4?

[Excalibur]

So none of the early colt carbines had burst?

[MT2008]

Originally Posted by Excalibur

So none of the early colt carbines had burst?

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.

[Excalibur]

And I remember a time where I was confused enough already on thinking about the difference between the few carbines I know of like the XM177 or the 733 and then I find out there are more

[MT2008]

Originally Posted by Excalibur

And I remember a time where I was confused enough already on thinking about the difference between the few carbines I know of like the XM177 or the 733 and then I find out there are more

There are dozens of variants in the Colt catalog alone. And that's not counting all the Franken-ARs that have been put together, both in the real world and in movies. Some of them simply don't have a specific model number.

[Excalibur]

I've seen them too. You have to be an AR-15 fanboy to know exactly what model you are looking at and of course for the franken guns you need to know a lot to recognize what is mashed up with what

[Spartan198]

Originally Posted by Excalibur

You have to be an AR-15 fanboy to know exactly what model you are looking at...

What, does someone need me to identify an AR?

[Excalibur]

We'll keep you on speed dial if we come across something of interest