TG36K rifle is is our rifle version of the K model, The K barrel is 12.79' and the platform requires a 16.5' barrel to stay over the 26" minimum requirement. We pinned and welded an extended K style flashier to make the barrel length a permanent 16.5" These come with one G36 P-mag with an FDE Magpod, folding stock, 2 piece rail set on the handgaurd and the handstop sling loop. They come with the standard top rail with built in sights, ambi controls, 1 in 7 twist nitride coated barrel, gas piston operated and designed to run 5,56 NATO spec ammo.