SIG Hammer Strut and SUPERSTRUT MAINSPRING SEAT
 
Genuine OEM / Factory Sig Sauer Polymer Mainspring Seat.
 
Most all Sig Sauer P-Series pistols manufactured after 2011 come equipped with the SuperStrut compatible mainspring seat.
Those manufactured before 2011 will most likely require this updated mainspring seat. Check your factory box for the manufacturing date.
 
Compatible with SA Superstrut - please click HERE.
 
All triggers, hammers, springs or any other ignition gun parts are intended for installation only by a gunsmith or a qualified armorer.