HK 416 10.4" Upper Gas Block – Vented
HK German 10.4″ Upper Gas Block Complete New Vented Style
New HK German manufacture newest “VENTED” version direct from HK Germany.
Great upgrade part for existing 10.4″ uppers that have the older style non-vented gas block or to use on the MR556-HK 416 10.4″ barrel conversion.
- HK 10.4″ uppers
- HK MR556 to 10.4″ conversions
- Origin: German
- Brand: Heckler & Koch
Out of stock