Issue exists with all AK rifles. I have tried it on each model and you can not attach the Bipod or Weapon >Flashlight with the Rail Handguard on.

Same here. I was pretty excited for 0.58 as I was looking forward to setting up a camp with my mates, but we have had the same issues with ours and it is nearly impossible to interact with the camp at the moment.

Okay cool, thanks for the quick reply!

A hotfix would be much appreciated. I searched for dozens of hours to find a Rail Handguard on 0.57 and now that I have one, I can't use it.

Sorry for the rather late reply, I was on vacation and didn't check my inbox. I have had this problem with 2 characters now, but I haven't had this issue since 0.58 since stable release, so it seems to be fixed.