The bolt carrier group is the core element of an AR15. It goes without saying, then, that it has to function perfectly. There are some important things to consider when choosing a BCG for your AR-15 rifle. Bolt Material This should be your primary concern. While BCGs are usually made ...
mostrifle stoppage issues can be prevented and a lot of the wear and tear to your BCG can be minimized. Bolt carrier group parts and upgrades are relatively inexpensive, easy to install and will only take a few minutes out of your day to replace. ...