I have a Noveske 16" Switchblock Barrel, new, never been installed, or used. Has never been fitted into an upper either.
This is a Noveske 16" Switchblock. It's the N4 barrel, not the stainless Recon version. This is the double chrome lined M249 steel Noveske made famous. Still plenty of Recon SB's out there. I don't know about you, but I haven't seen a 16" N4 Barrel in months, especially a switchblock. Comes with the pin for the gas block.
$480 OBO Shipped
Always willing to look at trade lists, but cash takes preference.