The only option will be the new 45* one coming from Taccom (note it will only be the internal barrel portion for sale, not the levers). It should be out around Black Friday and I believe will work with the factory levers as well as his extended ones. If you lost all of it, you might want to grab the new part and his levers. If you dont want a 45* or the extended levers, im sure there will be owners who will sell their stock parts off once the new stuff is ready