I just finished and tested my first build a dpms lower and a car 15 kit from model one.  Everything worked great.  Now I'm think of building an informal target rifle.  I'm looking at a flat top with an improved trigger (probably a jewel) and a nice target scope.  I want to make it as heavy as I can.  I'll probably add the stock weight not sure about forend weights since it will be a free floated forearm.  Are there any bull barrels that are longer than 24 inches or wider than .920- inches?  Is their any other way weight could be added with out changeing the shape of the rifle much?  I would like to get it close to 20 pounds if at all possibly but 15 will probably be all I can come up with.  Any ideas?  I would like the upper to be completely assembled also.

Thanks Mike H

I did have a very heavy AR years ago, someone made a FF tube out of .250" wall steel tubing.  That one was really heavy.  It had a 26" Kreiger barrel also.

Cheers,

Phil

jprifles.com (Good start for Target Barrel)
24"  1/9  Heavy Weight  JPSM-24HK9T  $499.00


Not sure exactly how heavy it is.  I doubt you'll find something longer than 24 inches unless you go completely custom.  If you got the money that JP Heavy Weight 24 incher is a good start.

YMMV

-Moco

I dont think you would need a barrel out past 24"

DPMS makes what they call a "Super Bull" barrel.  24" in length, 1.14" under handguard, 1.08" at muzzle.  have to use their FF tube forend (but is included in the price).  weight is a very hefty 7lb-3 oz., stainless, 1/9" twist.

ETA: link to it at Brownells  Super Bull