Grovtec US Inc Picatinny Rail Low Profile 45 Degree AR Platform Black Hardcoat Anodized This Par 45 Picatinny Angled Rail Has a 45 Degree Offset To Keep a Low Profile. The Angled Rail Has a Type III Black anodized Finish That Is Designed For Mounting Secondary Sights. Model: Picatinny Rail Material: Steel & Aluminum Finish: Black Hardcoat Anodized