There are three types (not two) of Gerber LMF II knives, the ASEK, the Survival, and the Infantry. Most people think there were only two types released. Here are the differences.
The Gerber LMF II ASEK version comes with the sheath, knife, TWO leg straps, the safety knife, and the safety knife sheath. The extra blades for the safety knife can be found in the handle. The ASEK is ONLY available in the foliage green color and it is INFRA-RED resistant.
The Gerber LMF II Survival version comes with the sheath, knife, TWO leg straps, the safety knife, and the safety knife sheath. The extra blades for the safety knife can be found in the handle. The SURVIVAL version is ONLY available in the camel brown color. It is NOT infra-red resistant.
The Gerber LMF II Infantry version comes with the sheath, and ONE leg strap. The INFANTRY version is available in foliage green, camel brown, and my personal favorite... black.
There is one other thing of importance you should know. From January 2008 to April 2008 the steel of these knives was temporarily changed from the Sandvik 12C27 SS to 440A US SS. In May of 2008 production was resumed with the original steel. Gerber had to change steel types because of a lack of material available. The 440A US SS was the closest match they could get.
These are great knives and I highly recommend them. They are excellent for hunting, camping, survival, and they have even seen action in foreign lands. If you are looking for a good solid fixed blade knife you can't go wrong with one of these models.
Here are the model numbers of the different types of knives.
22-01627 Foliage Green LMFII ASEK (IR)
22-01626 Foliage Green LMF II Infantry
22-01117 Foliage Green LMFII Knife only (no sheath included)
22-01118 Foliage Green LMFII Sheath only (no knife included)
22-01400 Camel Brown LMFII Survival
22-01463 Camel Brown LMF II Infantry
22-01629 Black LMF II Infantry