Griffin Armament AR-15 Stripped Lower Multi-Caliber Receiver, Black Overview The Griffin MK2 Ambi Lower is the ideal foundation for your next rifle build. Precisely machined from high-grade 7075-T6 aluminum to exact tolerances, the MK2 lower is a premium rifle platform offering proper fitment and utility with Mil-Spec lower components. To enhance durability, the MK2 lower is hardcoat Type 3 anodized for superior resistance to surface wear, scuffs, scratches, and discoloration from cleaning solvents and oils. Included with this lower are Griffin's ambidextrous magazine release and ambidextrous bolt catch & release controls, offering increased usability for both right and left-handed shooters. Key Features Premium Construction: Machined from custom-forged 7075-T6 aluminum for superior strength and durability. Ambidextrous Controls: Includes ambidextrous magazine release and bolt catch & release controls for enhanced usability. Durable Finish: Hardcoat Type 3 anodized black finish for protection against wear and tear. Optimized Design: 60Adeg magazine well for consistent reloads. Precision Machining: Premium in-machine de-burring & de-flashing for a clean, high-quality finish. Integrated Trigger Guard: Built-in trigger guard for added strength and convenience. Specifications Brand: Griffin Armament Series: Stripped Lower Receiver Model: MK2 Firearm Fit: AR-15 Hand Orientation: Ambidextrous Receiver Material: 7075-T6 Aluminum Receiver Finish: Black Anodized Weight: 0.6 lbs FFL Required:Yes Firearm Type:Other Firearms (Frame, Receiver, etc) What's Included Griffin Armament MK2 Ambi Lower Receiver Applications Perfect for competition, duty, or personal defense, the Griffin MK2 Ambi Lower provides the ideal foundation for building a high-performance rifle. Manufacturer SKU: MK2ALUPC: 689396839038