Product Description
The F-1 Firearms Durabolt Nitride Direct Impingement Full Auto Rated M16/m4 Bolt Carrier Group, For Use In Ar15 Platforms, Is Compatible With Mil-spec Receivers And Associated Components. The Bolt Carrier And Bolt Are Ground After Heat Treat To Ensure Tolerances.features :
- tin Coated Finish, Gold
- carpenter 158 Bolt That Is Ground After Heat Treat
- 8620 Steel Construction