The Trigger keychain by Violent Little is modeled from that of an M4 / AR-15. We took our classic trigger necklace trigger, slapped a steel cable on it and called it "GOLD"...but it's really bronze -cast right here in Idaho by a local foundry. Product innovation at its finest. Comes with a heavy duty steel cable to secure all of your keys. Also comes in a lovely trigger necklace version with deer skin cord.