I really like that a holster is available for the Flux Raider. It fits well once a light is mounted and holds it with the brace collapsed or extended. I like the addition of the QLS fork as well.
My first suggestion for a gen 2/final model would be some sort of secondary retention screw, a skeletonized strengthener or a thicker Kydex. On what would be the underside, where the grip side of the Flux slides in, it feels a little flimsy. Another suggestion would be some sort of active retention, even a button strap system to keep the pistol in place and slow down a grab from an OPFOR.
All in all, it’s a great start and I’m excited to see what the improvements will be!