Geissele Ultra Duty Lower Parts Kit 05-435B

Geissele Ultra Duty Lower Parts Kit

The Ultra Duty Lower Parts Kit from Geissele Automatics represents the pinnacle of lower receiver component engineering. Built for operators who demand reliability under the most challenging conditions, this kit includes all internal parts necessary to complete or rebuild your AR-15 lower receiver.

Premium Materials and Construction

Stainless Steel Components — Key parts are machined from stainless steel, providing superior corrosion resistance and extended service life compared to standard steel. This material choice ensures reliable function in extreme environments and under sustained heavy use.

Precision Machining — Each component is manufactured at Geissele's North Wales, Pennsylvania facility with meticulous attention to detail and quality control.

Key Features

• Maritime Bolt Catch — Aggressive texturing and extended paddles for positive engagement and reliable operation
• Ambidextrous Super Configurable Safety — Allows easy swapping of safety levers for left or right-hand operation; delivers satisfying, positive tactile feedback at safe and fire positions
• Ultra Precision Trigger Guard — 5-axis machined from solid billet 7075-T6 aluminum with Type-3 hardcoat anodize for durability and distinctive appearance
• Coordinated Design — Takedown pins and magazine release button feature matching texturing with the bolt catch for a cohesive, professional look

What's Included

This kit does not include a fire control group (trigger and hammer assembly), allowing you to select your preferred trigger system separately.

Note: This is a lower parts kit only and does not include the lower receiver itself.