I have several Mil-Comm products that came in a promotional gift pack several years ago, and TW-25B was one of them.
It's definitely good stuff, and if you want the absolute best lubricant for an AR-15, I'd say this is probably it.
My only issue with it, as well as many other specialized products, is the cost.
For my own use, and from years of personal experience, I find that plain old Moly Lithium grease does everything I need, and for damn near no cost since I have it in large quantities out in the shop already.
It keeps my guns running, even in moderately cold weather (central Ohio for twelve years), captures fouling so it wipes away during cleaning, and I see no signs of excessive wear on any parts.
So the cheap way out has worked well for me.
But, if you really want a specialized lubricant for your rifle, and don't mind the cost, you'd be very hard pressed to find a better product.
TW-25B does what they claim.