Complete your AR-15 pattern lower receiver build with the Ruger 91002 A2 AR Lower Parts Kit. This factory kit supplies every essential component needed to assemble a functional lower, including a standard GI-style trigger group and classic A2 pistol grip, streamlining the process for builders and armorers alike. Key Features Factory Ruger components engineered for consistent performance in AR-15 pattern firearms Includes complete fire control group with GI trigger, hammer, and disconnector plus associated springs and pins A2-style pistol grip provides traditional ergonomics and textured control surface All necessary pins, springs, detents, and controls for reliable operation of safety selector, magazine catch, bolt catch, takedown/pivot pins, buffer retainer, and trigger guard Phosphate-coated steel parts for durability and corrosion resistance What's Included Hammer, hammer spring, disconnector, disconnector spring Standard AR GI trigger, trigger spring, and two trigger/hammer pins Safety selector and safety selector detent Magazine catch, button, and spring Bolt catch, spring, plunger, and pin Pivot pin, takedown pin, two takedown/pivot detents, and two springs Buffer retainer and buffer retainer spring Trigger guard assembly and trigger guard pin Ejector spring A2 pistol grip with grip screw, washer, and adjustment screw Specifications Manufacturer: Ruger Model: 91002 Platform: AR-15 pattern lowers Trigger: Single-stage GI style Grip: A2 polymer pistol grip Dimensions: 7.1 in length x 5.5 in width x 1.9 in height Weight: 10.48 oz Why Choose This Product Builders appreciate the convenience of sourcing every small part in one kit rather than hunting for individual springs or pins. The included A2 grip delivers proven handling, while the complete fire control group supports straightforward assembly. Ruger parts are built to the company's standards for rugged reliability, making this kit suitable for new builds, repairs, or maintaining a spare parts inventory. Compatibility is intended for standard AR-15 pattern receivers; fit and function can vary with other manufacturers' components. Professional installation by a qualified gunsmith is recommended to ensure proper function and safety. Common Questions Does the Ruger 91002 kit fit non-Ruger AR-15 lowers? Yes, it is designed for standard AR-15 pattern lower receivers, though Ruger does not guarantee fit in every platform due to variations among manufacturers. What trigger type is included? The kit features a standard single-stage GI-style trigger group for traditional, reliable performance.