How to Install KUSA K21 Mlok rail?
Hey team, Im new to the AK world here & was wondering how to properly install the new kusa K21 zenitclone rail for my KP9. Does it require any fitting or hammerwork like original zenitco rails do? I tried hitting it in with a rubber mallet to no avail (goes in a bit but no further) & don’t want to risk damaging it or the gun by forcing it. Any advice or input from others going through this is appreciated!