I've been on google, arfcom, THR etc looking for ideas. I bought a DPMS M4 6 months ago. I want to switch to an A2 stock. I thought it was a 2 min task. Boy was I wrong. I can't get it to move a micrometer. So far I have: - Frozen it for two hours in a very cold freezer. - Hit it with a propane torch thoroughly. - Used a vise with cloth around the buffer tube, all it does is spin. - I have a 3 nipple wrench, the flat kind. STILL nothing. Anybody? Google-foo shows dumba$$ DPMS uses Locktite on the threads instead of staking it like they should... if this is the case that may be the last dpms I buy.