Sure. I tried filing them down and still had my doubts about clearance and decided to shoot without the pic rail. I haven't shot the gun with any mlok attachments just to rule it out.Around the gas-block is very tight, I would be very cautious trying to mount any though those slots. Everywhere else is functional. Again we just need to be aware of actual screw lengths. I’ve come across 3 or 4 different length MLOK screws, they’re far from universal.