AR handguard question

[strat81]

On Stag models 2 and 3 (http://www.stagarms.com/righthalf.htm), what size handguards do they use? CAR or M4?

What is the difference between CAR and M4 handguards? Size, shape, other?

 

[rcmodel]

CAR handguards are round. O
M4's are oval shaped. 0

http://www.bushmaster.com/catalog_parts_handguards.asp#10059144572

They are the same length.

I can't tell for sure what those Stags have from the pictures. Probably M-4.


rcmodel

 

[H2O MAN]

CAR hand guards taper down back to front.
M4's are fat at both ends.

 

[Onmilo]

Does this picture help define the difference?
M4s on the top and standard CAR handguards on the bottom rifle