Rainier Arms, home of everything that is good with an AR15 retailer, is having a Bolt Carrier Group Sale. If you recall it was just a few months ago when BCG's were virtually non-existent. Time to stock back up for all those uppers you never got a BCG for. This sale is on the main Rainier Arms M16 Full Auto BCG’s which includes their Phosphate, Nickel Boron and Nickel Boron Match BCG as well as a Nickel Boron Bolt. Just click on the images below to head on over to Rainier Arms.