US Military Modular Sleep System (MSS) – Complete
NSN: 8465-01-445-6274

✔ Genuine US Military Issue
✔ 4-Piece Modular System (All-Season Use)
✔ Rated ~50°F to -50°F (layer dependent)
✔ Includes Bivy Cover (Waterproof/Windproof)
✔ Compresses Down for Easy Transport
✔ Built for Extreme Conditions

Includes:
• Patrol Sleeping Bag (Warm Weather)
• Intermediate Cold Weather Bag
• Woodland GORE-TEX® Bivy Cover
• Compression Stuff Sack

🟢 Perfect for: Milsim, camping, bug-out kits, and cold weather 

US Military Modular Sleep System (MSS) – Complete

NSN: 8465-01-445-6274

Built for the battlefield and trusted in extreme environments, the US Military Modular Sleep System (MSS) is a complete, all-season sleep solution designed to keep you operational from mild nights to sub-zero conditions. Whether you're in the field, on a multi-day airsoft milsim, or building out a serious bug-out kit, this system delivers unmatched versatility and durability.

🔥 Why This System Stands Out

The MSS isn’t just a sleeping bag—it’s a modular, mission-ready sleep system used by the U.S. military since the late 1990s. 

Each component works independently or together, allowing you to adapt to changing weather conditions without carrying multiple bulky setups.

🧩 Complete 4-Piece System Includes

Patrol Sleeping Bag (OD Green)

Ideal for warmer conditions (approx. 30°F–50°F)

Intermediate Cold Weather Bag (Black)

Designed for colder temps (down to -10°F alone)

GORE-TEX® Bivy Cover (Woodland Camo)

Waterproof, windproof outer shell for protection from rain, snow, and ground moisture

Compression Stuff Sack

Packs the entire system down for transport and storage

✔ All components integrate into a layered system for extreme cold weather performance (down to -30°F to -50°F with proper layering) 

⚙️ Key Features

True USGI Military Issue – Built to strict military specifications

Modular Design – Use individually or combine for maximum warmth

All-Season Capability – One system for summer, winter, and everything in between

Waterproof & Windproof Protection – Bivy cover shields against the elements

Mummy-Style Heat Retention – Efficient insulation with adjustable hood

Rugged & Field-Proven – Designed for combat and harsh environments

Compact & Portable – Compresses down for easy transport

🏕️ Perfect For

Airsoft milsim (especially multi-day ops / OPFOR kits)

Camping & backpacking in unpredictable weather

Survival / bug-out gear setups

Military surplus collectors

Truck kits & emergency preparedness

📏 System Specs

NSN: 8465-01-445-6274

Weight: Approx. 10–11 lbs total 

Temperature Range: ~50°F to -50°F (layer dependent) 

Material: Water-resistant nylon + GORE-TEX bivy

Origin: Made for U.S. Military (various government contractors)

⚠️ Condition Note (if surplus)

This is genuine military surplus. Expect minor cosmetic wear consistent with field use, but all components remain fully functional (zippers, insulation, and stitching intact).

💥 Why Buy From Fury28.com?

At Fury28, we focus on real gear for real use—not airsoft-grade knockoffs. This MSS system is the same setup issued to soldiers, making it perfect for serious players, outdoorsmen, and anyone who needs gear that won’t fail when it matters.

🛒 Final Take

If you want one sleep system that does it all, the MSS is it. From humid summer nights to freezing winter ops, this setup adapts, protects, and performs—just like it was designed to.