3Bucc Brass-Savr Brass Catching System Front Flattop Mount NOTE: The mount must be slid on to the front of the rail. It does not expand to allow it to be clamped on. See photos of mount for details. Heavy duty steel frame Tear drop design enables full access to trigger and magazine actions High strength polymer mount uses foremost weaver notch only, allowing almost full rail for optics Hook and loop opening at bottom of bag allows easy removal of empty cases without removing Brass-Savr from firearm