Geissele Automatics Standard Lower Parts Kit

The Geissele Standard Lower Parts Kit supplies the internal components required to complete or rebuild an AR-15 lower receiver. This mil-spec kit includes an improved safety detent and a specially designed safety mechanism that provides positive tactile engagement when switching positions. The kit is intended for builders, armorers, and technicians assembling or refurbishing AR-15 style lower receivers.

Key Specifications

• The kit dimensions are 0.85 X 2.00 X 3.10.
• The height is listed as 0.8500.
• The length is listed as 3.1000.
• The width is listed as 2.
• The product type is Lower Parts Kit.
• The make is specified as AR-15.
• The subcategory is Long Gun Parts.
• The color/type designation is LOWER PARTS KIT.
• Shipping notice: NO DIRECT SHIP TO CALIFORNIA.

Designed to mil-spec tolerances, this lower parts kit provides the essential internals for reliable operation and serviceability in assembly and repair contexts. Its straightforward, component-focused design makes it suitable for professional gunsmiths and informed builders seeking dependable mil-spec internals for their AR-15 lower receiver projects.