My Socom came to me with few rounds spent and from a friend and gunsmith that knows stuff. The rifle has Boyds stock, unitized gas system, bedded, trimmed front sight and M1a aperture for the rear. Two things left undone that I plan to finish: truing brake to the crown and NM solid guide rod. The shim kit is on the way. My guy said he tried a solid NM guide rod and it bunched up the recoil spring. Question: What NM guide rod works best in a Socom. Thanks. It's great having friends that know more than you do.