Colt's Manufacturing Lower Receiver Parts Kit AR15 – Complete Factory Parts for AR-15 Lower Assembly

The Colt's Manufacturing Lower Receiver Parts Kit provides all the internal components needed to complete an AR-15 lower receiver assembly. This factory parts kit includes the trigger group, magazine catch, bolt catch, takedown pins, safety selector, and all springs, detents, and pins required for a functional lower. Whether you're building a new rifle or replacing worn components, this kit delivers genuine Colt parts engineered to original military specifications.

All components are manufactured to Colt's quality standards with mil-spec dimensions for reliable fit and function in standard AR-15 lower receivers. Installation requires basic AR-15 armorer knowledge and standard gunsmithing tools including punch sets and a vise block. This kit does not include the pistol grip, buffer tube assembly, or stock—those components are sold separately.

• Part Type: Complete lower receiver parts kit
• Compatible Firearms: AR-15 pattern rifles (mil-spec lower receivers)
• Material: Steel components with standard black finish
• Finish: Black oxide
• Installation: Professional recommended or experienced builder with proper tools
• Includes: Trigger assembly, hammer, disconnector, magazine catch, bolt catch, safety selector, takedown/pivot pins, trigger guard, all springs and detents (does not include grip, buffer tube, or stock)