I'll be disassembling my Sp-01 again to polish the trigger bar and sear cage bottom since my Dremel took a crap and just bought a new 4000 model. I just polished the barrel and feed ramp yesterday starting with 220 grit, 400, 800, the Flitz polishing compound with a polishing wheel and felt wheel for the final polish on the external barrel surface. No sand paper was used on the feed ramp just the Flitz. Started out on lower rpm's then stepped it up a couple thousands at a time to a mirror finish.
Last edited by CAGLS; 01-13-2013 at 5:25 AM..