As the title implies, our Accessory pack and the M4 pack have been updated to versions 1.3 and 1.8, respectively. They’re now compatible with the current release of Arma 3 (the post-“Survive” version). More details on the Accessory and M4 pages.
A new update is available now that primarily fixed the missing sounds after the latest update. Get it on the M4 project page. Other fixes include a new variant with angled foregrip, fixed sound effects, and model tweaks.