From a very reliable source: militarycarryknives.com :
"GA6: GRAY ARMORHIDE TYPE 6 : "SURVIVAL"; ARMORHIDE; L6 STEEL; WIDE WASP; 8 TEETH/IN.; SLANT 2 LOGO
The GA6 knives have the "wide wasp-waist" blade profile. Armorhide is a textured coating system based on vinyl dispersion resins (a fluid suspension of a vinyl resin in a liquid plasticizer system). The gray finish on the guard and pommel portions of the handle were then coated with a smooth black paint. All of these knives have an overall length of 11-1/2 to 12 inches. The handle length is 5-1/4 inches with 6-1/2 to 7-inch long blades.The GA6 knives are found on mid 1976 to late 1977 knives in the approximate serial range of 049939 - 062270".
Free USPS shipping within the USA.
USPS International Service. Import duties, taxes and customs fees are not included in the price or shipping rate. These charges are the Buyer’s sole responsibility. Please check with your country’s customs office to determine what these additional costs will be prior to buying. Duties, taxes and customs charges are collected by the shipping company delivering the package.