COLT .223 REM/.5.56MM NATO LOWER RECEIVER PARTS KIT FOR AR-15

The Colt AR‑15 Lower Parts Kit provides the core internal components needed to complete or refurbish a mil‑spec lower receiver, delivering the same dependable function Colt builds into its factory rifles. Each part is manufactured to Colt’s precise standards for fit, durability, and smooth operation, giving builders a reliable foundation for any AR15 project. Whether you’re assembling a new lower, replacing worn controls, or standardizing a fleet of rifles with proven OEM hardware, this kit supplies the essential steel and polymer components required for consistent, battle‑tested performance.

SPECS

• Platform: AR‑15
• Color: Black
• Material: Steel & Polymer (varies by component)
• Compatibility: Mil‑spec AR‑15

INCLUDED

• Mil‑Spec Trigger Assembly
• Safety Selector & Spring
• Magazine Release Button & Catch
• Bolt Catch & Plunger Assembly
• Takedown Pin
• Pivot Pin
• Springs & Detents
• Buffer Retainer
• Buffer Retainer Spring
• Pistol Grip
• Pistol Grip Screw
• Trigger Guard

See all of our AR15s and AR15 parts here.