Standard trigger base has lightweight Titanium bow. Tri-Glide trigger base has a steel ball bearing inset into rear of a titanium bow. Provides uniform contact surface and reduces friction. All base models feature overtravel and takeup adjustments. Purchase base and inserts separately.
SPECS:
Standard Trigger Base: Bow - Titanium. Base - 6061 aluminum. Tri-Glide Trigger Base: Bow - Titanium. Base - 6061 aluminum. Available to fit single stack 1911 Auto and Infinity (SVI) and STI wide body frames. Infinity/STI trigger bases measure .250" (6.35mm) wide and may require enlarging the width of the trigger slot in the frame.
Catalog page 115