gorilla 39Example: Gorilla® by Continental ContiTech 1 (25 .4 mm) 500 psi Made in USA Flame Resistant USMSHA No . 2G-IC-14C39 Couplings Refer to the ContiTech Industrial Hose AssemblyCheck out our special Gorilla Machining Mikhail AR-15 7.62x39 Barrel up. There are barrels of differing sizes and lengths that you can install easily on your rifle. Discover your perfect barrel