Prohibits direct attachment of m-lok devices on top ?! - Strike Industries Carbine Length M-LOK Handguard

There is no way to directly attach a device which uses M-Lok attachment. The nibs and bumps in areas of the M-lok openings prohibit that. One would need to attach a picatinny rail first which adds weight, cost, and height to the devices while creating another avenue for failure. The M-lok slots at the 10 and 2 O'clock are also a problem but not quite as bad. While I like the appearance and rugged feel this handguard, it would be easier to modify a stock carbine handguard using washers for top mount than using this. So that begs the question, how is this better than the stock handguard exactly if the m-lok sections have such disadvantages ? They act more like vent holes.