BCM 16″ Govt Midlength Low Pro Gas Block

BCM 16″ government profile, midlength gas system, button rifled barrel.  Barrel is 1/7 twist, fully chrome lined with M4 feedramps.  These have the factory BCM gas block, BCM barrel nut, and BCM flash hider factory installed; eliminating this guesswork.  Ready for your BCM handguard of choice.  Includes factory BCM gas tube and gas tube pin.  Barrel nut wrench notches are mint condition.