How does Armalite compare to Rock River, in particular, Armalite M15Ar and a Rock River A4.
What about each's brands detachable carring handles? Is the Armalite muzzle brake a good one?
What kind of acurracy can be expected from an Armalite 20 inch barrel? How good is the standard Armalite trigger?
Thanks!

I only have an Armalite so I can only speak of there quality. My Armalite is a m15a4. It shoots A 2" group at 300 yards all day long with good ammo. I have a Leupold 3x9x40 V2 on an Armalite mount. I would recommend the Armalite mount no matter what rifle you get. The carry handle is a quality piece. I also got the removeable front site it is very nice also. If you decide to go with Armalite check out Quantico arms .com they have the best prices and they are really good people.

Agree with all above.  My favorite AR is the ArmaLite M15A4 Carbine.  (The ArmaLite scope mount is a real sleeper in the high cost mounting business.)  RRA has come a long way in the last few years but I still give ACCURACY, fit and finish to ArmaLite.

My first AR was an Armalite 20" HBAR upper, and an Eagle lower with the NM trigger.  Once I found a good load for it, this rifle did numerous 1/2 groups, with the rest around 3/4", pretty much all day.  The Armalite NM trigger is great; I've fired thousands of rounds with various top ends on that lower, and the trigger still feels great.  The RRA lower I got had an atrocious trigger, but I tweaked it a la the 15 minute trigger job.  Don't know about Armalite standard triggers.  

I've never scoped my RRA M4gery upper; the 16" RRA varmint upper I just sold did a few sub moa groups, but I really didn't try very hard to find a load that the 16" barrel liked.  In terms of fit/finish, the Armalite was a hair better, but you really can't go wrong with either, really.  

The Armalite brake on the 20" rifle made for a very pleasant shooting experience, it almost feels like a .22 when I shoot it after I've shot the 16" rifles I have with no brakes.  

Like I say, you'll like both...if you don't mind the extra $$, I'd say get the Armalite, you won't regret it...but if money is tight, RRA will serve you well too.  But if you get the Armalite, you'll be required to learn the song "Me little Armalite" hehehe.  

You can go to Quantico Arms' website and listen to it...but that's not a good version...I've got a better one.  It's one of a few humerous songs to come out of the troubles in a little place called Northern Ireland.  That and "Fenian Record Player" hehehe.  If you listen to those songs, you might be able to figure out my name [:D].  But just remember, "if you want to pinch a record player, do it up the Shankhill Road" lol.  

"Wee Willie John McFadden was a loyal Ulster Prod,
Who thought that Ian Paisley was one step down from God.
He scorned the little children, in the backstreets of Ardoyne
And he thought that history started with the Battle of the Boyne.
And he thought that history started with the Battle of the Boyne.

One day he took a brick in his hands and dandered up the Falls
He was singing "Up the Rangers" and hummin' "Derry's Walls"
He broke the big shop window to annoy the Pope of Rome
He took the record player out, and then he started home
He took the record player out, and then he started home

Next night they had a hooley at the local Orange Hall
Wee Willie took his player to make music for them all
He chose a stack of records of a very loyal kind
But when the music started up he nearly lost his mind
But when the music started up he nearly lost his mind

This Fenian record player was a rebel to the core
It played out songs the Orange Hall had never heard before
For Golly's Brae and Derry's Walls it didn't give a fig
And it speeded up God Save the Queen till it sounded like a jig
And it speeded up God Save the Queen till it sounded like a jig

Well the boys were plain demented, to the ground Wee Willy was thrown
They kicked his ribs in one by one to the tune of Garryowen
They threw him out the window to a song about Sinn Fein, and
They kicked him all down Sandy Row to a Nation Once Again
They kicked him all down Sandy Row to a Nation Once Again

There's a moral to this story, what it is I cannot say
Oh maybe its the ancient curse, crime it will not pay
If you ask Wee Willie McFadden, he'll say "You're kind, you know", but
If you want to pinch a record player, do it up the Shankill Road
If you want to pinch a record player, do it up the Shankill Road."

Ah, that song makes me laugh hehehe.  

The Falls is a Catholic part of Belfast; the Shankhill Road is Protestant...that'll explain the song.  

 Nothing against RRA but I am gonna vote for Armalite on this one.  Every M15 I have seen or shot has been a dream in both looks and performance...they really do this one right.

Isnt here some dort of corporate connection between the two.

no connection what so ever between rock river arms and Armalite

You may be thinking of a corporate connection between ArmaLite and Eagle Arms.  (Eagle is a division of ArmaLite.)

Thanks for the replies. Any info will be appreciated.