They electromagnetically launch a projectile to create inertial fusion. They do not use a laser. the target implodes faster than the projectile. They were getting velocity multipliers by 10X back in 2019. They think the onward path to a reactor is better for this approach.

In 2019, Nick Hawker, First Light Fusion CEO, presented for the EPSRC Centre for Doctoral Training in the Science and Technology of Fusion Energy (Fusion CDT) at the University of York.