I have been thinking about picking up an AR in the next year or so. I have it narrowed down to one of two different guns at this time because my budget won't allow for an ADCOR Bear SBR. It's down to the Colt 6920 and the Colt 6921:
Stupid question time:
1) Is the ONLY difference between these two guns the shorter barrel on the 6921? In other words is the sight distance identical, the handguards identical, and everything else 100% identical?
2) From what I've read, and seen, the 6921 is the closest thing to the R0921 correct? The only real difference is that the R0921 is select fire?
3) What actually comes with the 6920 and 6921 in the box? Does the A2-style sight/handle come with it? I've heard that the Matech sight comes with some of the rifles or is that only the 6940?
I can't seem to 100% verify the answers to the above questions. Any help would be appreciated. Thanks!