Cold Steel Luzon 6" plain GFN handle

I bought both the Large and Medium sizes. The medium is going to be Every Day Carry. The Large? It is awesome. But it is also almost 8 inches CLOSED. Wonderfully light for it's size but seriously not in the "Pocket" knife" category. You can stick a baseball bat in your pocket, but it's gonna stick out. If I decided to carry it, I would find or make a belt case for it. 8 inches closed, I'm seeing it's 13 1/2 inches open. A Ka-Bar Marine Fighting Knife is under 12 inches. The Large is a BIG knife. Glad I bought both, but they definitely have different purposes. The Too EZ Opening Blade Fix is at the end of my review. You should follow all this numerically in order. Hints & Tips! - #1. - Oil. Get some. I suggest 3-in-1 oil. If you are a modern human, living indoors and have stuff, you need to have some 3-in-1 oil. Works on squeaking door & cabinet hinges, Bicycle chains and other machinery, and knives. A small can will last you for years. 3 ounce - $3 - https://www.amazon.com/3-ONE-100355-Multi-Purpose-Pack/dp/B0002JN5PG/ref=sr_1_4?dchild=1&keywords=3-in-1+oil&qid=1615923533&sr=8-4 . Order it at the same time as the knife and they may come together. #1A - If you open your knife and the liner lock is stuck - FIRST make sure you didn't engage the Slide Lock om the handle. That may be the whole issue, Can't close the knife because the Liner Lock is Locked in place. Doing the following with the Slide Lock engaged WILL trash the lock if not the entire knife. Got it? Unlock is to the rear. Right-handed instructions - You need a tool, preferably a wide flat-head screwdriver. Bigger=Better. Holding the Knife handle firmly in your LEFT hand and the screwdriver in your Right hand, just slip the tip into the wide open area at the back of the blade and gently ( to mild swearing ) twist like you are UN-screwing a screw. Counter clockwise Lefty-loosey. And the liner lock should release the blade and go back where it's supposed to be - until you open the knife again. #2. - When you get your knife it's not oiled. Needs oil. 3 to 4 drops properly should do it. Knife closed, setting on the rear/butt end, one drop on each side of the blade ( we're aiming for that bearing at the pivot point). Then 1 drop artfully applied to the flat area of the blade which should be pointed up if you are resting it on end and making sure a decent amount of that hits the little "step" in the flat AND the rounded dip next to it. If it doesn't, that'll be drop #4. Tip of a toothpick is handy for spreading the oil. #3 - After oiling the knife at the four points above - Now open your knife the old-school way. Knife handle in one hand, back of the blade in the other. Slowly open it all the way then close it again ( note: lock probably may not fully engage, that's fine). Do that 3-5 times, just spreading some oil. #4 - May want to do this outside in case you got oil crazy - Now start flicking the knife open and then closing it. After 10 good flicks - Open the knife and carefully remove any oil you can easily wipe off with a rag. Don't go poking around inside the knife, that oil we want to keep, we're just blotting up the excess that would get on your clothes & hands if we didn't "wipe the counter". #5 - Flick & Close. Repeat 100 times. 100 isn't a magic number. It's just a good start. Every piece of machinery requires a break-in period. Cars, firearms, folding knives. You DO NOT have to sit there and flick 100 times. Break the work into chunks. Because after about 20 open & closing cycles your fingers are probably gonna be fed up with the process. Mellow out. Spread it over a day or two. Flick a few times, walk away. Get used to grabbing the knife and opening & closing it. Become one with the knife. Ooooom. All this so far is just the cost of buying a new thing. Just to bring more bummer into the ownership of a knife, if you use it, you're gonna need to sharpen it, too. Until you lose or break it or toss it in a drawer forever. Thus closing the circle of owning possessions. -- That should fix most of the New Knife Problems. Now for the "Knife Opening in My Pocket" Fix: My *closed* Large knife with the blade facing down would open halfway open in my hand with the mildest of jolts. Not something I'd want to occur in the groin or gluts area of my pants. The fix is gonna send most of you shopping. The Fix is a #9 Torx bit. *MY* knife just needed the very slightest nudge of tightening at the pivot with a #9 Torx bit ( Clockwise - Righty Tighty ) . The Torx aperture is that round looking hole in the pivot. One side has the Torx hole, one side doesn't. I did have to do some careful slow "Oomph" on it, but just the very slightest of movement put mine very close to right. A tick, not a turn. If you crank it more than minuscule , that will be the New reason your knife will not open. I can still flick the knife open setting on its butt with one finger but it definitely tightened up the "Holdy-Shutty" tension. This WILL NOT prevent you from bumping the flipper ears in your pocket. But the knife won't just fall open because you move or walk down steps when you get the tension set tight enough for your preferences. And holding the knife upside-down, I can still do a clean jerk and inertia will swing the blade open.