Surface-ground and hardened tool steel bars are available in ten thicknesses. These bars are recommended by agency armorers and leading pistol smiths as the most precise method for eliminating vertical slide play in the 1911 Auto, its variations and replicas. Although this method may be slower than more expedient techniques, it delivers a significantly more accurate and professional result. The basic procedure is as follows - measure the thickness of the gun's slide rail, select the slide fitting bar that most closely matches this measurement, place it in the frame's way and gently tap the frame rail with a light hammer to adjust the way space to align with the slide rail thickness. Comprehensive instructions are included.

• Steel subjected to controlled heating and cooling processes to enhance mechanical properties such as strength, hardness and durability
• Precision-engineered stainless steel linear motion guide bar