I just released a new update for the FHQ M4 weapons pack for Arma 3 Alpha. You will find more information and the download here. PLEASE NOTE that the requirements have changed; you will also need the new FHQ Accessories pack. The FHQ Accessories pack is a collection of common (and eventually not so common) real-world weapon attachments like AN/PEQ-15 lased pointer, ACOG scope, and similar things. More information and the download can be found here.