Flash Hider Question

[Guns&Religion]

I've noticed that a lot of military and tactical type rifles have flash hiders, but some do not.

I was reading a wikipedia article on the M24 sniper rifle, (the military version of the Remington Model 700). I was surprised to see some pictures of it with no flash hider. (I even saw one picture on that page of a soldier in Iraq with an M24 equipped with a night vision scope, but no flash hider). I would think one would be very usefull in that situation.

Any thoughts on why some of these rifles have them and others don't?

 

[Zerodefect]

They can effect accuracy a little bit.

 

[hammerklavier]

I think they figure they are too far away from the enemy to need one.