The Brownells 1911 hammer squaring file is a specialized tool designed to aid gunsmiths in achieving precise 90 degree hammer hook angles during trigger adjustments on 1911 pistols. Accurately squared hammer hooks are crucial for ensuring consistent sear engagement, which results in a crisp and reliable trigger pull.

• This dual-sided, square file is engineered to optimize and streamline the precision alignment of hammer hooks
• Featuring protective edges on two sides, it facilitates precise material removal while safeguarding adjacent surfaces, optimizing performance with diverse hammer and trigger sear jigs
• The file retains its acute corners and planar edges after prolonged utilization, guaranteeing sustained reliability for precision tasks