Ithaca MainSpring Cup for Ithaca 37 Handgun Action Part

The Ithaca MainSpring Cup is a precision-made handgun action part designed to deliver reliable spring retention and smooth cycling for Ithaca 37 platforms. Engineered to fit the Ithaca 37 with exacting tolerance, this component enhances overall operability by ensuring consistent spring preload and chamber-to-slide interaction, contributing to steadier follow-up shots and improved reliability under varied field conditions. Constructed from durable materials and machined to tight specifications, t