The Anti-Rotation Castle Nut is specifically designed to work with this end plate
adding to its versatility
Manual Case Trimmer
they work great in regular progressive presses as well as turret and single station presses
Crimson Trace 011070 Lasergrips Fits S&W K/L & N Frames, Red Laser 633nM Wavelength 5mW Output, Black Polymer Scope Covers and Shades The Anti-Rotation Castle Nut isLaser sights for Smith & Wesson K, L & N Frame revolvers feature a polymer material that provides ideal grip security for large caliber revolvers. The laser activation switch is located in front, making activation "instinctive" when you assume a normal firing grip on the revolver. *Fits both round and square butt S&W Model 10 through 29, 48, 53, 56, 57, 58, 64, 68, 242, 329, 396, 530, 547, 581, 586, 610, 617, 624, 625, 627, 629, 648, 657, 686 and 686.