HK designed & manufactures in Germany 9″ HK416, MR556 extended quad rail. This drop in unit is anodized in the early version of RAL8000.

• 9" length

• quadrail

• fits HK 416/ MR556/ MR223

• does not come with the integrated flip up sights

• does not come with S/N markings

• made in Germany by HK

• Screw included!

• this item might have some storage/ shipping marks.