Very grippy, not the most comfortable option - Magpul Industries M-LOK Type 2 Low Profile Rail Covers

These are very rough and grippy. They look pretty awesome when installed and the fact that each piece only covers a single m-lok slot means that you can create an exact fit every time.

There are a lot of good things to say about them. My opinion is that they make for a very functional while not entirely comfortable grip.

Installation can suck if you're putting a lot of them on. It can be tricky to get rows of them to sit flat next to each other; they tend to want to overlap a little or push against adjacent panels. A bit of extra pressure fixes this, but my thumb was bloody by the time I got it all looking perfect.

In the end I passed these off to a friend, but I still like them and would recommend them to anyone that is looking for an aggressively-textured low-profile polymer rail cover.