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The Black Rain Ordnance BROLPKBLK Lower Parts Kit comprises several components including a buffer retainer and spring, trigger guard and roll pin, and a selector. The kit also features a bolt catch assembly that consists of a spring, retainer, catch, and roll pin.
Additionally, this kit includes a magazine catch and spring, a magazine button, and two sets of take-down pivot pin springs and detents. A pivot pin is also provided.
The BROLPKBLK kit also comes with a Mil-Spec disconnector, trigger and spring, a grip screw, a star washer, and a selector spring with detent. Two each of trigger and hammer pins are included in this set.
Furthermore, this kit contains a take-down pin, disconnector spring, hammer spring, and a Mil-Spec hammer, making it an inclusive package for firearm maintenance and assembly.