Built in the USA by MEC, a trusted name in reloading since 1955, the MEC primer seat assembly package exemplifies high-quality construction and strict manufacturing standards. Designed for durability, precision and ease of installation, this component is an essential upgrade or replacement part for any serious shotshell reloader. Whether you're restoring an older press or looking to enhance consistency in your primer seating process, this package delivers improved reliability and efficiency. Each part is carefully machined to exact tolerances, ensuring a seamless fit and superior function. Competitively priced and field-tested, MEC's primer seat assembly offers reloaders a noticeable improvement in speed, comfort and overall load uniformity. Reprime assembly streamlines your 1-stage reloading process Includes parts (330) spring, (326) primer cup and (331) primer pad for consistent primer performance