Geissele Lower Parts Kit

The Lower Parts Kit includes all the internal components necessary to complete, repair, or rebuild your lower receiver and grip, making it an essential foundation for any AR-platform rifle build. This quality mil-spec kit features an improved safety detent and a specially designed Posi-Lock safety, providing the end user with crisp, positive tactile feedback when engaging the safe or fire position for enhanced confidence and control during operation.

Each component is precision manufactured to strict specifications to ensure consistent fit, smooth function, and long-lasting durability. Designed for reliability in demanding environments, the kit delivers dependable performance whether you’re assembling a new rifle from the ground up or replacing worn components in an existing firearm. The carefully engineered parts help maintain proper operation of the fire control and lower receiver assemblies while meeting the standards expected from a high-quality mil-spec lower parts kit. With its combination of durability, reliability, and enhanced safety selector feel, this kit is an excellent choice for builders, armorers, and shooters looking for trusted performance and hassle-free installation.