Waste of time - Phase 5 Weapon Systems Inc Hexone AR15 Rifle Buffer Tube, /Complete Assembly

Doesn't work on my lancer carbon fiber stock, to thick so it won't go onto the stock. Also there isn't a screw on the end of the buffer tube so no clue how this would work on a fixed stock. Complete waste of time and money, the description on the website needs to be updated. Save yourself the headache and order a different rifle buffer tube because this one doesn't work.