HSGI Modular M4 Optic Scabbard (MM4OPT) attaches to any Modular platform, whether it be a Pack/Ruck or the back of a Modular Vest. Designed for AR and AK Platforms with Larger Optics, Holographic Sights, Red Dots, and Magnified optics.. Made of 2 layers of 1000 denier Cordura and includes its own mounting hardware. Open end to not trap dirt. Longer or Shorter length can be ordered at no extra charge. Can be use either right or left handed applications as the mounting hardware is reversible. Covered by HSGI's Lifetime Warranty. Made in the USA