03-12-2011, 03:35 PM
pappy42 Wrote:Which tool did you get? How hard is it to use? Thx
http://www.midwayusa.com/viewproduct/?pr...ber=810457
Midway and Brownells both offer this tool.
My tool had been dropped during shipping and had a ding right on the edge that deformed some metal. A little hand work and it has fine. The tool can be a very tight fit on some uppers, you may need to take some 600-1000 grit to the body of the tool and spin it to remove any burrs or machining marks so it well fit through the barrel extension hole on the upper.
The pilot shaft that the drill chuck attaches to is a little short but should not be a problem with a quality chuck.
I used some fine grit valve lapping compound I had on hand and I only took 20-30 seconds total with the drill the face the upper. Run the drill for a few seconds and check, do this until it has faced the entire face of the upper.