Features full-auto capability, a shot peened MPI Bolt, 8620 Gas Carrier and Gas Key fastened with hardened Grade 8 fasteners. The ultra-hard and corrosion-resistant Black Nitride ensures this BCG’s continued reliability and precision. Specifications for Tiger Rock AR-15 7.62×39 Bolt Carrier Group (BCG): Manufacturer: Tiger Rock Color: Black Finish: Ultra Hard Nitride Fabric/Material: Heat Treated Steel Cartridge: 7.62x39mm Gun Make: AR Platform Gun Model: M16, AR-15 Bolt Material: 9310 Steel Carrier Material: 8620 Steel Features of Tiger Rock AR-15 7.62×39 Bolt Carrier Group BCG: M16 Style (Full Auto); Precision Machined; Shot Peened MPI Bolt – 9310 material; 8620 Gas Carrier Package Contents: Tiger Rock AR-15 7.62×39 Bolt Carrier Group
Zachary Painter –
I received this bolt to install on my WW-15. Took it to the range and had roughly 30 light primer strikes. I contacted optics planet they told me to contact tiger rock. After about 3 weeks I finally got an answer that everything looks kosher. The firing pin just looks and feels rough you can visibly see how crappy the pin is. I had to buy a different firing pin to get this bolt to work. That's not customer service. I would not recommend you buy this.