It might have been a Noveske CHF chrome lined barrel… they advertise that they’re built to M249 SAW specs.
To the OP, whatever you do, don’t waste a bunch of money on a high end lower… it’s just a box to hold the trigger group and magazine. The only thing you get out of a name on a lower is bragging rights (assuming the cheaper lower meets the most basic specs for pin alignment, etc)
Noveske has tremendous reputation... chrome lined adds excellent durability.
Tycen just confirmed it was a ER Shaw on a Stag... used in the torture test.
