Posted: 8/10/2006 9:33:13 AM EDT
|
When is headspacing a concearn? When changing to a new barrel? New BCG? I'm about to finish building 2 AR's and I wanna make sure I don't miss any important steps, such as checking the headspacing. |
|
Headspace in an AR is set by the bolt (independent of the carrier) and the barrel extension. If both are new then assuming the parts are in-spec then headspace will be in spec, which is 99+% of the time as M4Madness noted. If either of the parts is used, then you should probably check the new combination, though odds are it'll be OK then too. |