Inception Designs Autococker Hammer / Main Spring Kit- free combined shipping
Main Springs for Autocockers and Pump guns.Also useful for many Nelson pumps. We recommend starting with spring B (slightly higher velocity) or C (slightly lower velocity) and tuning from there. This item can be combined with other Inception parts for free shipping. Please request a combined invoice prior to payment. Shipped USPS in a bubble mailer with tracking.