This is a Vertx known as the Gamut Overland, model F1 VTX5022 DO/ATB.
When you can't leave anything behind" including your PDW rifle" you can rely on the roomy and robust construction and features built into the Gamut Overland pack to keep your gear at the ready. The main compartment opens 180 degrees for easy loading and gear retrieval and the convertible front flap stows quickly behind the loop-faced internal MOLLE panel to change its visual signature and for quick access to critical items organized there. Adjustable shoulder and sternum straps and waist belt help you manage the load in comfort while maintaining control and stability.
Features:
YKK Self-Repairing Nylon Coil Zippers
Bonded Nylon Thread Throughout
Critical Seams and Attachment Points Bartacked for Extra Durability