**There is a youtube video of this handguard being torture tested by Palmetto State Armory. Just go to youtube and type in “palmetto state armory torture test” and it will come up. The rail they used was the quad rail design of this HG, but it is exactly the same rail except for the quad design. It’s done by our same shop here in the U.S.A, mounting is exactly the same and the material is exactly the same. Again, it is the exact same rail just a much more comfortable and practical exterior design.
http://www.customar15.net/shop/ar-15-upper-receivers/handgaurds/13-slim-free-float-rail/
http://www.customar15.net/shop/ar-15-upper-receivers/handgaurds/13-slim-free-float-rail/