USMC Modular Sleeping Bag System, Used. The USMC Military Issue Modular Sleep System is the Marines version of the well-known Army Issue sleeping system allowing for one set to give you an all-temperature sleeping bag layering option. The USMC system is designed to be lighter weight with the added features of the bug net on the bivy sack. Marines sleeping bags are also front opening for quick and easy exit. The USMC system comes with both the heavy weight intermediate sleeping bag, 3 season lighter bag, bivy and stuff sack combinations. The long or regular option refers to the 3-Seson sleeping bag which both fit equally into the intermediate and Bivy Sack. We build these as the original issue system including the outer compression Sealine Waterproof Stuff Sack, the smaller Compression Sealine Stuff Sack designed to carry the 3-season bag. The mesh storage sack is included designed to air out your sleep system when not in use and allow drying from moisture. USMC Coyote Bivy, Grade 2 with a complete head net. Black USMC Intermediate Sleeping Bag. USMC Coyote 3-Season Sleeping Bag. USMC Black SealLine large compression bag. Sealline 3-Season waterproof compression stuff Sack. Regular and Long lengths based on availability. Condition: Grade 2 used military surplus. Limited quantity based on availability. What you should know about Surplus. All items are in good usable condition with plenty of uses left on them. The Bivy netting may have a quarter size hole that may be repaired. Please note that due to these items being used by actual military personnel the conditions of each item may vary. Some items may have stains, color fading, or small repairs. Our staff has inspected all items and has made professional repairs on the items when needed. If for any reason there is an issue with the item, please reach out to our staff members and they will be more than glad to assists you and answer any questions you may have.