Bring precision and reliability to your AR-15 build with the Geissele S-Standard Lower Parts Kit (No Grip) — a carefully curated set of essential components designed to complete your lower receiver with the confidence and quality that Geissele is known for. Engineered to mil-spec tolerances and crafted with durability in mind, this kit delivers the foundation every serious builder demands.

Ideal for custom rifle builds, upgrades, or maintenance projects, the S-Standard kit includes all the core lower parts needed to finish your AR-15 lower — excluding only the grip so you can choose the ergonomic style that suits your preferences. Each component is precision-manufactured and rigorously inspected to deliver smooth operation, reliable function, and long-lasting performance round after round.

Whether you’re putting together a duty rifle, range gun, or competition build, the Geissele S-Standard Lower Parts Kit ensures that your foundation is built right the first time — with components trusted by shooters and armorers alike.

Features & Benefits

• Complete lower parts package (minus grip) — includes all essential components except grip so you can customize your feel and fit

• Mil-spec quality and fitment — precision-manufactured parts designed to perform reliably in any environment

• Reliable function — smooth cycling and consistent performance from pin engagement to trigger reset

• Ideal for AR-15 builders — perfect for new builds, upgrades, or replacing worn lower components

• Geissele-trusted performance — engineered and tested with real shooter feedback in mind