Product DescriptionThe Geissele Ultra Duty Lower Parts Kit (LPK) is built for hard-use AR-15/M4 lower receivers and includes the internal components needed to complete or rebuild a lower receiver. Key components are made from stainless steel to help deliver high-cycle durability and improved corrosion resistance for demanding environments. This kit includes Geisseles Maritime Bolt Catch with aggressive texturing and extended paddles, plus an Ambidextrous Super Configurable Safety that allows lever changes and provides positive tactile feedback between safe and fire. To complete the system, the kit also includes Geisseles Ultra Precision Trigger Guard, 5-axis machined from 7075-T6 aluminum and finished with a Type 3 hardcoat anodize for a rugged, premium build.Product Highlights Ultra Duty AR-15 lower parts kit engineered for rugged reliability in harsh conditions Stainless steel key components for corrosion resistance and long service life Includes Geissele Maritime Bolt Catch with extended paddles and aggressive texturing Ambidextrous Super Configurable Safety offers swappable levers and crisp tactile engagement Includes Ultra Precision Trigger Guard, 5-axis machined 7075-T6 aluminum with Type 3 hardcoat anodizeSpecs Brand: Geissele Automatics Product Type: Lower Parts Kit (LPK) Compatibility: Standard AR-15/M4 lower receivers Color/Finish: Desert Dirt Color (DDC), Type 3 hardcoat anodized Materials: Stainless steel components; trigger guard machined from 7075-T6 aluminum Included Components: 19 standard parts including hex key; includes Ultra Precision Trigger Guard; includes Maritime Bolt Catch; ambidextrous safety selector assembly Pistol Grip Included: No Country of Origin: USA UPC: 817953025321 Manufacturer Part Number: 05-435SDisclaimer: 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 products manufacturer.