LOWER GROUP, RESOLUTE, Mk57, Mil-Spec Trigger

When it comes to picking a lower for your 5.7x28mm carbine or SBR, this RESOLUTEMk57(TM) lower group capitalizes on cross-compatibility, giving you the ability to use the same magazines on your Mk57 rifle and other firearms that utilize FN(R)* Five-seveN(R)* pattern magazines. Available in seven different Cerakote finishes, RESOLUTE MkGs lowers come with a suite of meticulously engineered CMMG parts and accessories like:CMMG RipStockZEROED Pistol GripZEROED 60deg/90deg Ambi SafetyZEROED AR15 Bolt CatchLifetime Quality GuaranteeWe aim to please, that's why every CMMG product is backed by our Lifetime Quality Guarantee against material and workmanship defects. Learn More.**Mk57 Lowers are designed for use with CMMG 5.7x28mm Radial Delayed Blowback uppers only**