I am getting a bushmaster carbine in about 3 weeks and when I buy it I am going to get a handguard with rails, I want it to be four sided so I dont need to ever upgrade it, So, what are the best handguards out there right now?

Oh, yeah lets keep the price at around 150, Not the S.I.R or the R.A.S

Well since you have limited yourself to $150, your best and only bet for a 4 rail handguard is the Fobus M44S. It has four rails and you do not have to remove the barrel like some of the other set ups, ie: the C-more rails system....

Other than that, I cannot think of a 4 rail system for under that price other than the Fobus M44S....

If you are looking for a rail to put a foregrip or a light/laser mount on, try [url]www.advanced-armament.com[/url]

They have a rail and a foregrip, that is a dead ringer for the more expensive Knight's grip, for just under $50 for the set. It's rock solid and attaches to your existing handguards.

I have not tried the Oly thing, but then you got to get the front sight off....

There is also the Olympic Arms Firsh system.  From FAC the carbine version is $85.00.

Junior_Gunnut

I decided to but out the extra cash and get the S.I.R.

Bushmaster makes a 4 rail handguard and it is of the highest quality.