This ongoing series that is included in all of the products that we make here at Rick Hinderer Knives grew from my other passion which is military history. What I have done is taken my regular production Knives, Pens, and accessories and made them look like a military artifact that was picked up right off of a battlefield! The finish on the blades, handles, hardware, ect. is meticulously applied by hand to give it that unique very special look. Because of this the finishes WILL vary from what is pictured. Also, you will find on some of the BFPU series products markings called proof marks, and cartouches that were applied by military and arsenal inspectors to weapons, bayonets, knives and other military items before the item was shipped to the government arsenals. This really cool touch gives all Rick Hinderer Knives BFPU products a unique flair not seen anywhere else! As an extra special touch all BFPU series knives are serialized with a special serial number. And ALL BFPU products are a very limited quantity!