Expo Arms Mil-Spec Builder AR-15 Lower Parts Kit

The Expo Arms AR-15 Builder Lower Parts Kit gives a stripped lower a Mil-Spec foundation, including the safety selector and every other small part except the pistol grip, fire control group, and trigger guard.

Kit Includes:

• Safety selector with detent and spring
• Bolt catch with roll pin, plunger, and spring
• Magazine catch with spring and aluminum release button
• Takedown and pivot pin pins with detents and springs
• Buffer retainer pin with spring

Every component is manufactured to Mil-Spec dimensions for drop-in compatibility with standard AR-15 lower receivers from any manufacturer, leaving the pistol grip, fire control group, and trigger guard as the builder's choice. This kit also works well as a spare-parts supply for field or range repairs.

Expo Arms manufactures Mil-Spec AR-15 components in the United States, backed by a Limited Lifetime Warranty against manufacturer defects, material or workmanship problems, and normal wear and tear.