Decided to keep it.
This is a 16" Black Hole Weaponry barrel with 3-groove polygonal rifling, 1-11 twist, SPC II chambering. It has a target crown, carbine-length gas, and M4 extended feed ramp. This is BHW's "light" profile, approx .750" under the handguards and .730" forward of the gas block. Matte finish.
I bought this barrel with the intention of cutting it shorter, but decided to go a different route. It has never been assembled or fired.
$245 plus shipping. Payment by Postal MO or discrete PP (+3%, or gift option) preferred. Sorry, not looking for trades.
You can reach me by IM or email.
Thanks for looking!