Any guesses how this happened?
This video documents a catastrophic failure of a custom AR-15 during rapid fire. The footage shows an explosion from the upper receiver/handguard area, leaving the shooter's hand covered in soot. The damaged firearm is identified as an AR-15 pistol/SBR build featuring a Hera Arms CQR front grip, Holosun optic, and suppressor, chambered in 5.56 NATO.













