1in OD, 4140 5.56 bull barrel. Chambered for 5.7 and threaded 1/2-28.
In the white, if we get enough orders (share the links!) I will send an email about parkerizing options
There are 3 length options, 12" to go with the pistol receiver, 17.5" for the rifle version, and 20+" for the extreme length build.
Orders are 4-6 weeks out from shipping, depending on manufacture leadtimes and beta size.