Unicorn
Flashlight Enthusiast
The Axis locks by Benchmade are awesome. there isn't much to go wrong. It's basically a steel rod that stops the blade from moving. Take a look at one to see exactly what I mean. It uses spring tension to move the locking bar forward, but there are two of them for redundancy and reliability. They are easy to clean, run it under water, or soapy water if really bad, then oil. The only disadvantage is that they can't really be taken apart by most users. My 710 was totally reliable while getting it covered in the fine dust of the Yakima Training Center in Eastern Washington (it doesn't rain east of the mountains, almost a desert).