Black Rain Ordnance GI Lower Parts Kit – 5.56mm

The Black Rain Ordnance GI Lower Parts Kit provides the standard small components used to populate an AR-style lower receiver for 5.56mm builds. This kit assembles the basic control group and common accessory interfaces using MIL‑SPEC style parts where noted. It includes trigger and hammer components, fire control parts, and the various pins, springs, and detents required for a serviceable lower.

Product Specifications

• The manufacturer is Black Rain Ordnance.
• The product is a GI Lower Parts Kit intended for AR lower receivers.
• The kit is labeled for 5.56mm builds.
• The kit includes GI grip, buffer retainer, trigger guard, trigger guard roll pin and related grip hardware.
• Included fire control components are MIL‑SPEC trigger, MIL‑SPEC disconnector, and MIL‑SPEC hammer.
• Trigger and hammer hardware includes two GI trigger/hammer pins.
• Includes takedown/pivot hardware: pivot pin, take down pin, two take down/pivot pin springs, and two take down/pivot pin detents.
• Magazine catch components include mag catch, mag catch spring, and mag release button.
• Bolt catch components include bolt catch, bolt catch spring, bolt catch retainer, and bolt catch roll pin.
• Selector and related parts include safety selector, selector spring, and selector detent.
• Springs and small parts include trigger spring, hammer spring, disconnector spring, grip screw, and star washer.
• The parts list as supplied contains common small parts such as mag release button, trigger guard roll pin, and various pins and springs.
• UPC: 707129994004.

This kit supplies the basic mechanical components needed to assemble a functional lower receiver using commonly accepted MIL‑SPEC style parts. Whether completing a new build or restoring an existing lower, the collection of pins, springs, catch components, and the control group in this kit address the core assembly needs for a standard AR lower. It is practical for workshop assembly and gunsmith maintenance tasks where original-style small parts are required.