Anyone try one of these yet?

hkparts.net 10 inch conversion for mr556

Yeah, i have one. Got one about 1.5 weeks ago.

Everything was nice and clean, and lubed up, no QC issues as far as i can tell. 

I swapped out a chopped MR556 barrel for the 10.4" HK Parts barrel. No issues with install, the HK Parts barrel was a tiny bit looser when mated to the upper receiver, compared to the MR barrel i had on it.

I ended up not using the included vented gas block, and just used my older non-vented gas block. Mainly because the sling hooks on my older one were machined off already, so it could fit under my RAHG rail. I'll probably use the spare parts for another 416 clone build.



Just took it out to the range yesterday for the first time.

Ran fine (a bit gassy) suppressed/unsuppressed at the range. Had my M4-2K on it.