Rainier Arms Thunder Bolt M16 BCG Nickel Boron AR15 AR-15
The Thunder Bolt™ BCG was created to meet and exceed all Mil Spec standards. Giving you the confidence to run your weapon long and hard at 110%. You will never have to worry about your BCG being the weakest link in your weapon. The bolts are HPT & MPI tested & Marked to give you ultimate confidence in your weapon system.
M16 Full Body Carrier:
Extractor Retaining Pin:
Gas Key Bolt:
Firing Pin Retaining Pin:
Ejector Retaining Pin:
Limited Lifetime WarrantyRainier Arms offers these with a limited lifetime warranty. So if at anytime your Rainier Arms Thunder Bolt BCG breaks on your during normal use(Intentional abuse & Gas Key wear not included) Rainier will replace it.