I found this review on the SEAL Pup. It sounds pretty tough.
The SOG Seal Pup is a 3/4 version of the official Navy Seal Knife, which has all the attributes of its larger brother, but is more easily handled and stowed.
The SEAL knife evaluation program to select their official knife included the following tests:
Tip breaking strengths, blade breaking toughness, sharpness, and edge retention, handle twist off limits, two week salt water immersion tests, gasoline and acetylene torch resistance, chopping, hammering, prying, penetration, cutting of 6 different types of rope and nylon line, low noise and reflectivity evaluation, plus intense hands-on competition in the field.
I found the knife very impressive and it lives up to its claims. Although I have yet to use it as a hammer, it does make an acceptable pry bar when necessary.
The sheath is the most versatile knife sheath that I have ever owned. It can be mounted in any position and has a knife retention spring action built in making it impossible to shake the knife loose from the sheath, although it is easily removed with a slightly firm pull.
If you are in need of a high quality, high value, fixed blade, that isn't a "Rambo Machette', I would highly recommend the SOG Seal Pup M37.
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SOG Sealpup M37 specifications
Fixed blade
440A Stainless steel, 1" serration, 3" smooth, 3/4" knife trap, with dark gray powder coat finish (which looks and feels like Teflon, but I cannot verify that)
4 3/4" long, .160 thick, 9 1/8" OAL, weight 5.5 oz., 56-58 Rc, full tang
Glass reinforced Zytel handle with lanyard hole
Black Tactical Kydex belt sheath with multiple mounting points to include: boot clip, 6 round steel eyelets, 4 1" webbing slots, 2" web loop large enough for pistol belt, web loop has sliplock buckle to attach to additional web gear