Geissele Ultra Duty LPK DDC | Ambi Safety | Maritime Bolt Catch

The Geissele Ultra Duty Lower Parts Kit is a complete AR-15 lower parts set designed for demanding use and long-term durability. Key components are made from stainless steel to resist corrosion and extend service life. The kit includes Geissele’s Maritime Bolt Catch with aggressive texturing, an Ambidextrous Super Configurable Safety with swappable levers, and a precision 7075-T6 trigger guard finished in Type-3 hardcoat anodize. This LPK is intended for builders and technicians assembling or refurbishing AR-15 lower receivers.

Product Specifications

• The brand is Geissele Automatics.
• The product is the Ultra Duty Lower Parts Kit DDC.
• The kit is intended for the AR-15 platform.
• The finish/color is Desert Tan.
• Key structural components are made from stainless steel for improved longevity.
• The trigger guard is a 5-axis machined billet 7075-T6 aluminum component with Type-3 hardcoat anodize.
• The kit includes the Maritime Bolt Catch with aggressive texturing and extended paddles.
• The safety is an Ambidextrous Super Configurable Safety with the ability to swap and exchange safety levers.
• The takedown pins and magazine release button feature tank-tread textured finish for cohesive ergonomics.
• The package includes all internal parts necessary to complete or rebuild a lower receiver as described by the manufacturer.
• The components are machined at Geissele’s facility in North Wales, PA.
• The kit includes Geissele’s Ultra Precision Trigger Guard as part of the assembly.
• The UPC is 817953025321.

This Ultra Duty LPK brings heavy-duty materials and refined ergonomics to a build, combining corrosion-resistant stainless steel internals with the tactile controls Geissele is known for. Its ambidextrous safety and extended bolt-catch paddles improve operation for a wide range of shooters while the machined 7075-T6 trigger guard adds a durable, finished look to the lower. Choose this kit when you want components sized and finished for hard use and long service life.

Users commonly praise the Maritime Bolt Catch’s aggressive texturing for positive manipulation, and many note the robust feel and durable finish of the trigger guard and control components.