I have been looking for a way to mount a light to a Mk1 hand guard without using a 1913 rail section and an additional mount on that. Geissele used to make a kit, but it is no longer in production. I found that an Arisaka in-line scout mount for Troy/VTAC Alpha (with Alpha slots) works without modification. It uses a back plate, which makes it a bit more difficult to install than m-lock or keymod because it requires access to the back of the hand guard. However, I was able to install the mount at the front without removing the hand guard. This mount works with Surefire Scout, Streamlight protac rail, and Arisaka 300/600 lights.
This mount allows running an M4SDII and looks to have plenty of room for different type suppressors.
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