ABS barrels - don't waste your time or money.
I asked and paid for two barrels to be wrapped. Paid the money up front with the promise of a 21 day turn-around. I had to fight with Mr. D to get my barrels back in 3 1/2 months. He wouldn't answer calls or emails - I couldn't even find out if he was still in business because his answering service was turned off.
Had to contact a lawyer in his city/state and threaten legal action before I got my barrels back. Neither had the titanium brake paid for and promised - they were returned w/ stainless brakes. One was a Kreiger chambered in 300 WSM - it was ruined and had to be scraped. The other is a Bartlein gain twist in 6mm. It won't shoot 1" groups on its best day.
Try to get Todd Bettin to do a carbon wrapped barrel - He does mostly builds. At least with him, you will get something back in a timely manner that will shoot as promised and will be what you ordered.