I recently tried the shim method and I works great. Bought a selection (.001 - .005) steel shim stock from MSC Industrial, along with Loctite Black Max adhesive. Experimented with different thicknesses by curling them up and clipping them over the hinge pin (where they remained, even with the barrels removed). When the correct thickness was found (.002 in this case), I simply cut a piece too large for the hook so it stuck out on both sides, top and bottom, glued it in place with the Black Max, carefully trimmed all edges flush. I have asked several friends to look at the barrel lug and tell me if it's been worked on in any way. No one has been able to detect the shim. Total cost was about $60.00 for materials, and I have enough material left to do about 300 more guns. I can't see any drawback to this method. If it works and is invisable, what could be better? Bill
