Geissele Ultra Duty LPK | AR-15 Lower Parts Kit

The Geissele Ultra Duty Lower Parts Kit supplies the internal components needed to build or rebuild an AR-15 lower receiver. It combines stainless-steel critical parts with Geissele proprietary components machined in North Wales, PA, and a billet 7075‑T6 aluminum trigger guard finished in Type‑III hardcoat anodize. The kit is aimed at demanding users who want durable internals and enhanced ergonomics for frequent use.

Common applications include precision builds and competition or range work where durability and reliable controls matter, and gunsmithing or restoration projects requiring premium replacement parts.

Product Specifications

• The manufacturer is Geissele Automatics.
• The product model is listed as the Ultra Duty LPK.
• The kit is designed for the AR-15 platform.
• The product type is a Lower Parts Kit.
• Key internal components are made from Stainless Steel for improved longevity.
• The trigger guard is machined from 7075 T-6 Aluminum on a 5-axis mill.
• The trigger guard finish is Type-3 Hardcoat Anodize.
• The kit includes Geissele’s Ambidextrous Super Configurable Safety for interchangeable levers and positive tactile engagement.
• The kit includes the Maritime Bolt Catch with aggressive texturing and extended paddles.
• The takedown pins and magazine release feature tank-tread texturing for consistent manipulation.
• The finish style is listed as BLACKT6 ALUMINUM.
• The listed package dimensions are 1.20 X 2.25 X 4.30.
• The package height is 1.2000.
• The package width is 2.2500.
• The UPC for this product is 817953025314.

The Ultra Duty LPK brings Geissele engineering to the heart of an AR-15 lower, pairing corrosion-resistant stainless components with a machined billet trigger guard and refined controls. Whether you’re assembling a high-use service rifle or doing a detailed rebuild, this kit supplies premium internals and ergonomics that stand up to frequent operation.