HKPRO Forums banner


  1. HK416 and HK417 HQ
    I know the title of this post sounds stupid, but consider me stupid when it comes to AR's. The MR556A1 is my very first! I am a long time owner of HK USP pistols so I know the drill and can disassemble and reassemble them blindfolded (fibbing a little of course), but consider me very...