Porting of slide and barrel with recessed slide cuts; up to 4 ports.
Recess cut width & depth into slide depends on slide design.
Ports are 1/8" diameter.  
 
Refinishing:
Select the desired finish for machined areas.  NOTE that stainless steel slides CANNOT be re-blued.  They will be left as-machined or will require full recoating (DLC, CrN, TiN, etc.). 
 
Rebluing is included in the price.  DLC/CrN/TiN are an additional cost. 
 
PLEASE READ SHIPPING INFORMATION HERE.