While I've only got a few hundred rounds through it, the Huldra has been %100 reliable so far. I paired together the LE lower(standard trigger) with the 5.56 (1 in 7 twist) mid length upper with normal AR handguards and a set of Daniel Defense fixed sights. It's definitely much easier to clean than a DI gun; just wipe off the old oil and reoil, and the piston just unclips out the front of the gas block. I was going to get a BCM A4, but they had no idea how long the backorders would take.
Many of the feeding issues with AR's are due to crappy or damaged magazine feed lips. Pmags are reliable(but good luck finding one right now). Keep in mind the Huldra likes full power ammo (PMC, Winchester, Lake City all ok), so it may not eject the weaker wolf ammo.