Put them to work right away swapping a barrel and rail on an AR15 frame, work great and help up to barrel torque just fine!
The set is exactly as advertised and the shipping was very quick. I'm very happy with this purchase!
This AR vise block I purchased worked great, high quality plastic holds my upper nice and tight.
I purchased these vice blocks from BCT mostly for the price, but the quality was fairly impressive, too. They did their job well enough; definitely put some masking tape on your upper when using the upper block, though, so you don't scratch the finish. I noticed the lower vice block'll hold the lower, but not too tightly, so keep that in mind when you're tightening down your castle nut, etc.
Other than that, they worked great. I was able to finish my build within a couple hours, using a tutorial from IraqVeteran8888, and the blocks definitely helped--especially since I can't afford all the specialty tools that they use.
Helping my Pops build his first AR, so he stops taking mine.lol
Handy to have. Great service fast shipping.