Offers information on Heckler and Koch firearms, a message board, and gun rights data.

Features this North American subsidiary which also distributes Fabarms.

Presents a library of information on everything for owners and enthusiasts of the Mark23 or Mk23mod0 SOCOM.

Offers information about the P7 series of semiauto pistols made by Heckler and Koch with an HK-4 annex.

Features this unofficial resource for the serious student of Heckler and Koch. Provides a forum and also sells HKPro gear.