I'm bringing back these light mount posts, for pairing with CETMA HALFracks.
They're simple 2-inch tube segments with a 6mm threaded hole inside, making a good place to attach a headlight. Screw them to the built-in tabs on your HALFrack.
Price undetermined, but they'll likely be 7 bucks. Available asap. I'll soon make an adapter for 5-rails, too. Okie-doke.