I received both of mine today... (UPS missed my original date on my first, so I had to have the local UPS store hold the order as I was traveling...)
First order, I only ordered one 5.56 barrel as it was unknown twist (blackthorne didn't respond to email through their ask a question option on their website and I was tired of waiting).
That one is dated 95 and is 1-7 CR stamped near the muzzle.
On reports of the 1-7 twist barrels here I ordered another dozen figuring I'll need 4-6 for all my planned builds and hopefully at least 1/3rd come out as 1/7... Well, no dice. These arrived marked 12-88 and no twist stamp. I haven't manually checked twist but initial guess is 1-12. Pretty bummed on that actually...
Strangely, the outside of the 1-7 95 barrel had much more corrosion/darkening than the 88 barrels...
*First order was the 13th and 2nd was the 18th -- but there were still more than 100 barrels available when I placed my order on the 18th (I knocked them 90) and didn't see them in stock yesterday... Just looked and there are 163 of the 5.56 barrels listed now...
I ordered some of the 308 SAR, Sniper, and Hadar barrels, some hinges, 2 magal stocks, a few of the ARM handguards, and some other miscellany too. Though the packing job left much to be desired here, but everything else looks to be in order. I'll report back on barrel markings in full and actual twists once I have some time later this week.