Mk18 ABR 7.62 mm

 is a weapon in Project Argo.

Summary
The Mk18 Advanced Battle Rifle is a more compacy and lightweight evolution of the Mk14 Battle Rifle. The ABR is an ergonomic rifle that can be accessorized and was designed for high accuracy. It's chambered for a 7.62x51 mm cartridge and is typically used in ranges from 600-800m.