There is no doubt just how capable and popular the AR15(Mk4) platform is, and while most plain mil-spec AR15 lowers could do the job for your next build, you don't have to settle for just good enough. Available in seven different Cerakote finishes, this CMMG RESOLUTE Mk4 lower group comes with a suite of CMMG parts and accessories you won't find anywhere else. FeaturesCMMG RipStockZEROED Pistol GripZEROED Trigger GuardZEROED 60deg/90deg Ambi SafetyZEROED Ambi Mag CatchZEROED Extended Mag Release ButtonZEROED AR15 Bolt Catch