The Glock factory thread protector for .45 ACP G21 Gen 4 is a precision-machined accessory designed to safeguard the integrity of your threaded barrel. Crafted from durable materials and finished in sleek black, this thread protector features an M16x1 LH threading to ensure a secure fit and reliable protection against damage, dirt, and debris. Whether used as a replacement or to preserve your barrel when a suppressor or compensator is not attached, this factory OEM component upholds Glock's commitment to quality and performance. Keep your firearm in peak condition with this essential protective accessory.

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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.

WARNING: Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).