HK MR556 12.5" Black M-LOK Handguard 51001100

Top notch service. To my surprise, the fore end arrived like the NEXT DAY! And the fore end was prefect. Exactly what I wanted. I replaced the original 9" quad fore end with this one, and I absolutely love how it changed the functionality and aesthetics of my rifle. TIP: The bolt head that comes from HK with this fore end sucks. It has 5 sharp sides that protrude out from the fore end creating a finger cutter/masher! I re-used the allen head bolt that came with the quad rail and it helps dramatically. I contacted HK about it, and you can probably guess what kind of response I got from them. "Your concern will be documented".