reposted

would i want this one or the one that cants out a bit for my HK MR 5.56 with a 1-8 ACTAR NF ?

i used this one on my AR 10 and my MR556, so it will work in your HK.

Most guys want the cantilever if they don’t have a flat top because there may not be enough rail to support a mount to address eye relief. That said this will work fine.