I read all the reviews from purchasers, which were quite different from the promo videos, and despite their warnings I bought this knife. I couldn't help it, LA Police Gear had it on a super sale so it was embarrassingly cheap. I just got it today and sure enough, I couldn't open the damn thing. I'm talking about trying to open it with two hands! I started looking for a safety. After about 5 minutes, or at least it seemed that long, I finally got the blade out. Closed it and tried the thumb stud.......could not make it open. I am not small and not weak. I have been collecting knives for 40 years. I have dozens of AO knives. Yet, I could not open this one without using two hands. I sprayed a small amount of lubricant on the knife, still could not open with one hand using the thumb stud. I immediately called LAPG customer service to bitch and complain, and as I was waiting on hold for the next representative, (and hearing a recording about how important my call was), I continuously opened and closed the knife with two hands. After about 75 openings I began trying the thumb stud with one hand. It was still tight and I had to hold the handle at a funny angle, but it started opening. After another 50 openings it began to loosen up. The next 10 attempts opened with just a little more tightness than I liked but it was workable. I hung up the phone before customer service answered. The knife is now opening great. I threw it on the ground to make it fire accidentally, and could not make it open. I then picked it up and it opened beautifully. It is still not like one of my Benchmades, which are silky smooth, but the knife is working fine and getting better each time I open. I am having absolutely zero failures. Mine may be another redesign as it has a serial number, and a matching serial numbered box, and that makes me think it is different than both the un-numbered models and the 1212's. If I had not been on hold with customer service and able to work the mechanism over and over, this knife would have gone back. I am actually kind of happy with the knife now.