http://www.valkyriearms.com/index.htmlhow much is a Valkyrie m2hb going for used and how reliable are they= stan
Hopefully they do a better job on m2hb than they do on mg42's. I picked one up last year that they built for a guy up here that had issues. Boy did it have issues ,bent welded bolt , buffer tabs installed wrong -loose ,rails to tite , barrel extension ground on, grip frame installed wrong. It took me a while but it works now.still getting together ammo, headspace guage, cleaning kit etc. before firing- stan
Pictures of the internals and inside the receiver box may help with your 50. That way the 50 shooters can add information more easily.
I've got a half assembled M3HB on my coffee table right now with all the bits, if you can post pictures of the internal parts I can give you direct comparisons to the KMP parts.