TAC Force TF-640 Series Assisted Opening Folding Knife, Two-Tone Tanto Blade, 4-1/2-Inch Closed

I'm not typically a knife kinda guy, but several of my friends own knifes, so I figured what the heck. I think this knife is extremely well made, and upon being tested, it is VERY sharp!! It's easy to open with what seems to be a spring assisted latch, it's also easy to close. There was no case that came with it, but I'm not going to complain, this knife is at an unbelievable price, built well, looks great and is light weight. I found a case for it on Amazon for under $6.00 which was well worth it so I could carry it on my belt. Now, I'm not positive about this fact, however I have a couple of friends that work for the police department (not as beat street officers), and they believe that this knife could be illegal in California, you should probably double check on that info if you live there.The only other thing I can add is that if your not a knife kind of person like me, please note there were no instructions in the box, I don't know if that was a mistake or just the way it comes, so if you know somebody that knows these instruments, please let them show you the in's and out's about this knife or any other that you may decide to buy in the future.

I was very skeptical that this would be a well made product, but with the price they had listed it wasn't going to hurt me if I totally disliked it. Shipping was very quick even during the holiday weekend (Christmas). I've been using this knife for approx 3 weeks and have no real complaints about it. I work as an officer and use knifes a lot in my line of work. The blade was very sharp upon arrival, I was able to cut off bumpers and parts of tires at accidents scenes. I haven't had to use the seatbelt cutter as of yet. I'm probably going to test it on the next totaled out vehicle accident (with owners permission of course). I will hopefully use the glass breaker soon.The knife has very good weight, its not to heavy nor to light. I keep it in my back pocket of my uniform and the belt clip holds it secure throughout my shift. When first opening it was stiff. After normal use it becomes easier. The only downside I had was that I had to re-tighten the hinge (very easily done with a torx screw). I had to only do it once.I would purchase this for a friend or coworker with confidence. Great item for the price.UPDATE: I finally got to try the glass breaker today...I was sadly disappointed it did not shatter the window as I hoped. I attempted to shatter to a front driver side door and it failed to even scratch it. It possibly could have been user error but I have another knives that I had no problem in completing this task. It's still a durable knife regardless.

I own several other Tac Force knives and just picked up a couple of these to add to the collection. They're much larger and heavier than the pictures may lead you to believe, but they're on-par with the other Tac Force knives I have.Out of the box, the "assisted opening" on one of the knives was perfect, but the other one was a little tight and required inordinate effort to "assisted open" all the way to the locked position. In a matter of a few seconds with a Torx T-8 screwdriver, I was able to adjust it to "just right". If you adjust yours, it's best if the tension is "just barely" loose enough to allow the blade to open all the way to the locked position by itself. Incredibly *tiny* adjustments of the tension (like, "did it really turn at all?") yield enormously big changes. Be careful not to make it so loose that the adjustment screw works itself out and knife falls apart.Since I never use the pocket clip on any of my knives, I removed it from these. Doing so requires a T-6 Torx bit. If you choose to remove the pocket clip, be warned that the screws are torqued in there mighty tight. Since you may want to reattach the clip sometime in the future, be sure to store the clip and its tiny screws some place you won't lose them.On both knives, the main blades were sharpened to a razor-like edge and required no additional honing. The "seat belt cutter" blade seemed a little dull in my less-than-scientific paper test, but I don't have the means to test it on an actual seatbelt.One side of the handle has a small "Police" logo medallion attached. Previous experience with other such logo medallions tells me that they fall off easily just from being in your pocket. It's a purely aesthetic thing, but you might like to know about it nonetheless. Frankly, I don't buy knives just because there's a "Police" or "Special Forces" or "whatever" medallion pressed into the handle. If the thing stays on, great. If it falls off, oh well. It doesn't really matter to me.Finishing off the "butt end" of the knife, there's lanyard attachment (something else I never use on my knives) and a glass breaker which I'm confident can get the job done.Overall, it's a great knife that is a good value for the money. At this price-point, it certainly won't break the bank if you lose the knife or break it. The same cannot be said of some of the other knives I've *had* in my collection.

I've had Tac-Force knives before and generally liked them. I bought this one as a test to see if it was as good as the M-Tech "US Marine-branded" knives I've been giving away for the last couple of years. As I said, it's good, and it's sharp right out of the box, and my grandson was certainly happy with his, but he and I both think the M-Tech is the better knife - build, quality, sharpness, and design. Sorry TAC-Force...