Product Description The Aero Precision AR-15/M5 Fix-It Kit is the essential solution for anyone who has accidentally launched a detent, spring, or pin across the garage during an AR-15 build. This thoughtfully assembled kit includes the most commonly lost small parts so you can finish your build without frustration or delay. All components are compatible with AR-15, M4E1, and M5 platforms, and are proudly made in the USA by Aero Precision, a trusted name in precision firearm components. With multiple quantities of each part included, the Fix-It Kit also serves as a reliable spare parts supply for future builds and repairs. Product Highlights Includes all the most commonly lost AR-15 build components: detents, springs, pins, and retainers in one convenient kit Compatible with AR-15, M4E1, and M5 builds, offering versatility across multiple popular platforms Also includes 4-40 Set Screws for threaded takedown pin detent holes and a Threaded Roll Pin for advanced configurations Multiple quantities of each part provided, ensuring you have spares for future builds or unexpected losses Made in the USA by Aero Precision, delivering consistent quality and reliability for your AR-15 build Specs Brand: Aero Precision MPN: APRH101627 UPC: 840014611409 Compatible Platforms: AR-15, M4E1, M5 Country of Origin: USA Kit Contents: Takedown Pin Detent (4) Takedown Pin Spring (4) Bolt Catch Roll Pin (2) Trigger/Hammer Pin (2) Safety Selector Spring (2) Safety Selector Detent (2) Buffer Retainer (2) Buffer Retainer Spring (2) Disconnector Spring (2) 4-40 Set Screw for Threaded Takedown Pin Detent Hole (2) Threaded Roll Pin (1) Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.