STI 2011 Mainspring House Pin /W Magwell – Blued
Mainspring housing pin for 2011’s with a Magwell installed
Manufactured of high-grade steel on high end Swiss CNC screw machines. Center-less ground for a perfect fit and flaw-less performance. All parts are heat treated and hardened after machining for extra durability and finsished with black oxide finish for increased durability and wear.
Finish: Black Oxide Finish