Confirm Action

Are you sure you wish to do this?

Confirm Cancel
Member Login
Site Notices
9/22/2017 12:11:25 AM
Posted: 9/21/2005 11:21:35 AM EDT
I have a 20" heavy barrel that is marked, " NB 5.56 1/9 G" near the barrel extension, the front sight base is marked M then a small mark in a circle then 4. Anyone know what it is?
Top Top