seems like everywhere is sold out on Bolt Carrier groups.
I just bought 2 of them from here.
http://www.dsarms.com/ZM4_AR15-Semi...ly---ZM485018509-A/productinfo/ZM485018509-A/
I just bought 2 of them from here.
http://www.dsarms.com/ZM4_AR15-Semi...ly---ZM485018509-A/productinfo/ZM485018509-A/