The Primary Weapons Systems piston with M13.5x1 LH thread pitch is designed to optimize your firearm's performance by ensuring smooth cycling and enhanced recoil management. This piston is engineered for left-handed threaded barrels, providing a secure and reliable fit. Crafted from high-quality, durable materials, the ensures consistent operation and long-lasting durability, even under heavy use. Whether you're involved in tactical operations, competitive shooting or hunting, this piston helps improve your firearm's reliability, accuracy and functionality, offering a dependable upgrade for those looking to get the most out of their shooting experience.

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These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.