USGI MOLLE II Rucksack, Field Pack Frame (Large) Model 1603

Genuine Issue Large Rucksack Frame (Model 1603) for MOLLE II field gear equipment. A standard-issue external frame for the U.S. Army's large-capacity rucksacks. Known for its durability and flexibility, it is designed to manage extreme weight while maintaining soldier mobility. 

NSN

• Foliage Green [GEN4]: 8465-01-524-8368
• Tan: 8465-01-519-6440
• Black: 8465-01-465-2158

Features

• Weight: 2.3lbs
• Dimensions: 22.5 x 15.5 x 3.5 inches
• High-Impact Polymer: Constructed from a specialized, high-density polymer designed to resist fragmentation, extreme temperatures, and heavy impact without cracking.
• Ribbed Design Architecture: Features a series of horizontal and vertical ribs that allow the frame to flex and move with the user's back, reducing the "rigid board" feel of older metal frames.
• Contoured Profile: Ergonomically shaped to follow the natural curve of the human spine for better load distribution and comfort.
• Load Bearing Capacity: Specifically engineered to support "Sustainment Loads" of up to 120 lbs (54 kg).
• Lightweight Construction: Despite its strength, the frame weighs approximately 2.2 lbs, keeping the overall pack weight manageable.
• Multi-Slot Perimeter: Dozens of integrated slots along the outer edge allow for highly adjustable placement of shoulder straps and waist belts to fit different torso lengths.
• Center Support Slots: Vertical and horizontal slots in the center of the frame are designed to secure the rucksack bag and specialized gear like radio pouches (ASIP).
  MOLLE/PALS Compatibility: The slot spacing is standardized to accept various straps, buckles, and lashings from the wider MOLLE II ecosystem.
• Retrofit Versatility: This frame is the most popular choice for "Hellcat" modifications, where users mount older ALICE packs onto this modern polymer frame for improved comfort.
• Jump Rated: Fully approved and certified for Airborne Operations (parachuting) when properly rigged.
• Temperature Stability: Designed to maintain its structural integrity in climates ranging from -25°F to 120°F.
• Chemical Resistance: The polymer is resistant to many common oils, fuels, and DEET-based insect repellents.
• Easy Decontamination: The non-porous surface allows for easy cleaning or CBRN (Chemical, Biological, Radiological, Nuclear) decontamination in the field.