Heckler & Koch HK 416 10.4" Upper Conversion Kit
This listing is for a Factory German Heckler & Koch HK 416 10.4" barrel
Includes gas block, barrel nut with thin profile and OTB.
NOTE: This unit does not have a vented gas block and does not include a flash hider, piston, piston rod, or upper receiver.
Condition: Used - Good to Very Good
All NFA Rules Apply