This is by far the worst AR-15 kaboom I have ever seen on the internet. The operator somehow mistakingly mixed pistol powder and rifle powder in a few of the cartridges he loaded. The result was catastrophic failure. Just about all the parts were destroyed. Photos from ARFCOM …

Apparently the gold-like coating on the bolt and carrier is from the vaporized brass cartridge. Can any engineers or chemists confirm this?

The shooter was ok, other than getting whacked in the face with the charging handle and having small pieces of the carbon fiber freefloating tube embedded in his forearm.

More photos after the jump … (more…)