I suppose I thought they stopped developing after failing to raise the necessary amount on Kickstarter. Luckily that was not the case.
There's a free tech demo on their web page. I'll update here once I've tried it.
http://www.groundbranch.com/Store/Alright, I've tried it. The tech demo has two maps; a firing range and a killhouse. Both feature stationary and moving targets, with red and blue colors. You can walk, run, sprint (can't aim while sprinting, can aim while running but you'll end up shooting all over the place), crouch, stand upright, and lean left and right. You can engage/disengage the weapon with the press of the middle mouse button, and by scrolling the wheel hold the weapon down or up while disengaged and aim while engaged. Fire modes can be selected if the weapon has more than one. By holding down the tab key you can look around freely. You can have separate sensitivity settings for general looking, looking through non-zooming optics and looking through zooming optics.
Right now there are only a handful of weapons; an M4, an AK47, an MP5-N, an MK12SPR and a M1911 sidearm. There are categories for shotguns and light machine guns but they are empty. You can customise the weapons to use various kinds of optics, different sized magazines, different types of bullets, suppressors, bipods, flashlights etc. The great thing about this is that you can place the attachments wherever the rails allow it. You can also sometimes attach a smaller sight on top of a bigger one.
Gameplay feels pretty good, even if I only got to run around small maps firing at targets. Unreal Engine 4 looks and sounds good. There will be a proper demo and the game will be in some type of an early access at some point. I'll definitely have to start following this game again.