.45acp Tactical Government fit set with ball radius,  knurled flat top, knurled front and rear serrations and RMR type rear sight cut.  Tactical Race Ready receiver, 25lpi checkered front strap, 25lpi arched mainspring housing, plunger tube slot w/plunger tube, ejector and grip screw bushings installed.  Hand fit with the tungsten carbide application.  Over a 450.00 savings.