Since I traded away my RRA rifle, I have decided to build this one with a N4 Light Carbine Low Profile Upper 14.5 inch Noveske and not SBR it, I have this upper on layaway and once I get it out I will post pictures of the build, here is a picture of the Upper assembly I will be using
Specifications:
14.5" Cold Hammer Forged Barrel, 1 in 7" twist, 5.56mm
--Made of Mil Spec M249 Machine Gun barrel steel, with heavy M249 Chrome Lining,
(appx. 2 times as thick as an M4 or M16)
--Extended Feed Ramps
--Mil Spec Phosphate finish
--Same weight as M4 barrel, 1 lb, 9 oz, but improved contour for maximum
rigidity, no M203 notch
--MP HP tested barrel
--Carbine length gas system
--Forged charging handle
--Shot peened and MP tested bolt
--Auto carrier group with properly staked carrier key
Low-Profile Configuration:
--Forged Vltor MUR upper receiver featuring an anti-rotation interface with the handguard
--9" railed handguard
--Low-profile gas block pinned to barrel
--Flip-up front and rear sights
4 lb, 10.1 oz, (may vary based on flash suppressor options)
--Flash suppressors are permanently installed to meet the ATF 16 inch barrel rule for non-NFA use