Under controlled laboratory tests the handguards can support a force of 90 pounds in any direction, and 600 pounds along their length – more than even extreme users require. We field test every handguard configuration, firing thousands of rounds in tortuous conditions. Once finished, we bring them back to the lab and inspect the handguards for flaws or cracks. The resulting high-strength design is unique enough that it’s covered by a US patent! We can even hang 40 pound dumbbells from the end of all handguard models with no signs of bending.