Soldier Systems posted this up. Unity Tactical is making an upgrade replacement clamp for the Magpul MBUS Pro front sight. The replacement clamp will allow you to offset mount a light

The Monkey Bar replaces the OEM clamp to provide the user with a solid and lightweight FUSION compatible mounting interface. The FUSION interface allows you to directly mount Surefire™ Scout Lights as well as 1913 rail sections (Using the Offset Rail), 1” or Executive Series Ring Lights (Using the FUSION Ring Mounts) or Surefire ™ Millennium Series Lights (Using the Millennium Series Adapter).

The Monkey Bar is precision machined out of 6061-T6 aluminum and Type 3 Hardcoat anodized for durability.

The light mount weighs 0.2 oz and is in production now. They will be available at the end of April. No word on pricing yet.