Product DescriptionThe Geissele Ultra Duty Lower Parts Kit is built for hard-use AR-15 lower receiver builds and rebuilds, delivering premium, proprietary components engineered for demanding conditions. Key internal parts are made from stainless steel for extended service life and improved corrosion resistance under heavy use. This kit includes Geissele's Maritime Bolt Catch with aggressive texturing and extended paddles for faster, more positive manipulation, plus the Ambidextrous Super Configurable Safety with swappable levers and crisp, tactile "safe/fire" engagement. To finish the build with a refined, cohesive feel, the takedown pins and magazine release button feature matching tank-tread style texture, and the kit includes Geissele's Ultra Precision Trigger Guard, 5-axis machined from billet 7075-T6 aluminum with a Type 3 hardcoat anodized finish. Grip not included.Product Highlights Ultra Duty AR-15 lower parts kit for completing or rebuilding a mil-spec lower receiver (no grip included) Stainless steel key components help resist rust and premature wear in harsh environments Includes Geissele Maritime Bolt Catch with extended paddles and aggressive texturing for improved control Ambidextrous Super Configurable Safety provides swappable levers and positive tactile engagement Ultra Precision Trigger Guard is 5-axis machined from billet 7075-T6 aluminum with Type 3 hardcoat anodizeSpecs Brand: Geissele Automatics Product Type: Lower Parts Kit Firearm Fit: AR-15 (mil-spec lower receivers) Color: Black Materials: Stainless steel components; trigger guard is billet 7075-T6 aluminum Finish (Trigger Guard): Type 3 hardcoat anodized Included Components: 19 standard parts including hex key; includes Ultra Precision Trigger Guard; includes Maritime Bolt Catch; includes ambidextrous safety selector Grip Included: No Approx. Item Weight: 0.25 lb Approx. Item Dimensions (L x W x H): 2.300 in x 0.670 in x 0.430 in UPC: 817953025314 Manufacturer Part Number: 05-435BDisclaimer: 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.