Here they are:
"Original" MSS (dating back to mid-1990s):
http://www.armyproperty.com/nsn/8465-01-445-6274All versions of the MSS and IMSS fall under the same Line Item Number (LIN):
https://www.armyproperty.com/lin/M60483 The 4-Part Modular Sleep System (MSS) (Regular Size) includes the following items:
1. Camo Green (OD Green) Patrol Sleeping Bag,
http://www.armyproperty.com/nsn/8465-01-398-0685Rated for temperatures 50 to 30°. Reversible double-pull (opens end to end) slider allows top or bottom ventilation. Non-locking slide fastener self repairs if jammed or snagged. Draft flap prevents heat loss. Hood adjusts for heat retention; includes nylon drawcord and barrel lock. X-Long version measures 87-89″ Long and 35-37″ Wide (22-24″ at foot). 3lbs.
2. Black Intermediate Cold Weather (ICW) Sleeping Bag,
http://www.armyproperty.com/nsn/8465-01-398-0687Rated for temperatures 30 to -10°. Sewn insulation does not migrate in the bag. Anatomically designed foot box contains twice the insulation as the bag. Sewn-in, quilted chest collar prevents air drafts up and down through the hood. Hood adjusts for heat retention; includes nylon drawcord and barrel lock. X-Long version measures 87-89″ Long and 34-36″ Wide (21-23″ at foot). 4lbs.
3. Black Compression Stuff Sack,
http://www.armyproperty.com/nsn/8465-01-398-5428Compressible to one cubic foot, six or nine 1″-wide nylon webbing straps adjust by ladder lock buckles. Measures up to 23.5″ in length, Just over 10″ in diameter.
4. Woodland Camouflage Waterproof Bivy Cover,
http://www.armyproperty.com/nsn/8465-01-416-8517Made of waterproof and windproof 3-layer GORE-TEX® fabric. When combined with Patrol and ICW bags, the system is rated to climates -20 and to -50° with proper clothing. Approved by all agencies of the DOD.
X-Long version measures 87-89″ Long and 34-36″ Wide (27-29″ at foot).