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Backpack Subsystem

The modified commercial Backpack Subsystem (UM21) contains a backpack, patrol pack, and butt pack. The backpacks state-of-the-art internal frame affords a stable platform sufficient to carry 120 lbs. effectively. The backpack transfers load efficiently from the shoulders to the waist and provides adjustments to fit the 5th - 95th percentile male SOF operator. The butt pack attaches to ELCS or the backpack; the patrol pack attaches to the backpack, and is compatible with the other SPEAR BALCS components.

ARVN Rucksack

In 1963 Natick Laboratories developed a tropical rucksack for the Army of the Republic of Vietnam (ARVN).

MIL-R-43323: RIFLE BUTT POCKET AND STRAP ASSEMBLY

Military specification MIL-R-43323 covers one type of rifle butt pocket with strap used with field packs.

Lightweight Rucksack

The lightweight rucksack with aluminum frame was developed by Natick Laboratories for cold weather and mountain use as an initial effort to develop lightweight load-carrylng equipment in 1961. It weighed 3 pounds (1.4 kg) as compared to the 7.5 pound (3.4 kg) cotton rucksack with steel frame which it replaced.

Lightweight Individual Clothing and Equipment

Based principally on the conclusions and recommendations of 'A Study to Reduce the Load of the Infantry Combat Soldier', 1962, and 'A Study to Conserve the Energy of the Combat Infantryman', 1964, a Quantitative Materiel Requirement (QMR), was established in 1965 calling for the development of Lightweight Individual Clothing and Equipment (LINCLOE).

FMFRP 7-23: Small-Unit Leader's Guide to Cold Weather Operations

FMFRP 7-23.

MIL-F-43356: FRAME, RUCKSACK, (RIVETED), AND SHELF, CARGO SUPPORT, (LIGHTWEIGHT)

Military specification MIL-F-43356 covers an aluminum frame and cargo support shelf used with the lightweight rucksack.

MIL-C-41823: COVER, RUCKSACK, CAMOUFLAGE

Military specification MIL-C-41823 covers a camouflage cover for the lightweight rucksack.

MIL-R-1619: RUCKSACK

Military specification MIL-R-1619.

Field Pack Cover

The field pack cover is intended to be used over the medium and large field packs to provide camouflage.

MIL-C-43830: COVER, FIELD PACK, CAMOUFLAGE, LC-1

Military specification MIL-C-43830 covers the material, design and fabrication of a field pack cover.

MIL-S-43828: STRAP, WEBBING, CARGO TIE DOWN, LIGHTWEIGHT PACK FRAME, M-1972

Military specificatin MIL-S-43828 covers the requirements for a strap consisting of nylon webbing, a metal fastener and a metal hook.

MIL-F-43834: FRAME, FIELD PACK, (RIVETED), AND SHELF, CARGO SUPPORT (LIGHTWEIGHT), LC-1

Military specification MIL-F-43834 covers a lightweight aluminum pack frame and a detachable aluminum cargo support shelf.

MIL-S-43835: STRAPS, PACK FRAME AND FIELD PACK, GROUND TROOPS

Military specification MIL-S-43835 covers waist, shoulder, and chest straps for use by ground troops in attaching and adjusting LC-2 pack frames and field packs.

Combat Patrol Pack

The combat patrol pack was designed for short missions and offers 1200 cubic inches of cargo space in two compartments.

Tropical Rucksack

The tropical rucksack is a nylon version of a cotton rucksack for ARVN forces. It has a longer back and more capacity.

DA Pam 21-54: Body Armor for the Individual Soldier

DA Pam 21-54 is a soldier's guide for the use and care of fragmentation protective body armor.

MIL-R-43373: RUCKSACK, LIGHTWEIGHT

Military specification MIL-R-43373 covers a lightweight rucksack made of OG-106 nylon fabric.

MIL-R-43574: RUCKSACK, TROPICAL

Military specification MIL-R-43574 covers the tropical rucksack.

Medium Combat Field Pack

The medium field pack is designed to carry up to 50 pounds of existence loads which include clothing, personal items and rations.

Large Combat Field Pack

The large field pack is designed to carry up to 70 pounds of existence loads which include clothing, personal items and rations.

MIL-F-43833: FIELD PACK, COMBAT, NYLON, MEDIUM, LC-2

Military specificatin MIL-F-43833 covers medium size combat field pack fabricated from nylon duck.

MIL-F-43832: FIELD PACK, COMBAT, NYLON, LARGE, LC-1

Military specificatin MIL-F-43832 covers one type large size combat field pack fabricated from olive green nylon duck, webbings, tape, coated cloth and metallic hardware.

Field Pack Liner

The field pack liner is intended to be used as a liner for field pack to hold items other than subsistence items that must be protected from moisture. The liner is also intended as a flotation device for the individual carrying the field pack.