I’ve been using the SMC (Side Mount Cantilever) light mount from Impact Weapons Components for over a year now on a couple of different uppers. The SMC is part of the Mount-N-Slot series of products that are designed to attach to the Magpul MOE polymer handguards and is by far the best light mount I’ve found for MOE handguards.
One of the things I really like about it is that it can be mounted on either side of the handguard so left or right handed you are good to go and you can even mount the light on the opposite side of your support hand and use a tape switch, etc. And because it uses a modular light ring system it can accommodate pretty much any hand held tac-light you can think of. If you switch to a different size light, just buy a new ring, not a whole new mount.
The cantilever design pushes the light up and forward towards the FSP which puts it in the perfect spot to activate it with your thumb and gives you more room for your support hand grip. By mounting to the slots in the Magpul MOE handguard there is no need for a picatinny rail section to add bulk or weight. You’ll also notice that the mount is at a slight angle toward the center line of the gun because it follows the line of the handguard. This tucks it in a bit tighter than if it were just sticking off the side or straight up.
If you’re looking for the best light mount to run on your MOE handguard, this is exactly what I would recommend. It’s CNC machined out of 6-series Aluminum and made right here in the USA. You can find it under the “Light Mount” tab at www.ImpactWeaponsComponents.com. As always, you can save 5% by using the discount code “AR15NEWS” at checkout.