Designed and engineered for those who never settle the RISE Armament Ripper billet AR-15 lower receiver has a sleek streamlined design that emphasizes form as much as function. Features include a flared magwell and oversized trigger well. - Key Features - Precision CNC machined from 7075-T6 billet aluminum - Flared magwell opening - Oversized trigger well - Specialized milled pockets for extra weight reduction - Multi caliber marking - Mil-spec component compatible - Includes upper tension screw - MIL-A-8625F Type III Class 2 hard anodized flat black finish - Not currently compatible with Magpul Gen 3 magazines - Manufactured in RISE Armament�s Oklahoma facility according to strict AS9100 aerospace requirements which are more stringent than standard gun manufacturing requirements - Backed by RISE Armament�s 100% product guarantee and lifetime manufacturing warranty - Designed and made 100% in Broken Arrow Oklahoma U.S.A. - 7.9 ounces