Heckler & Koch HK77UK

Heckler & Koch HK77UK aka Heckler & Koch 77UK is a new assault carbine in use by private military units worldwide. H&K's British subsidiary has installed the latest in collapsing stocks and auto-stabilizers, making it more accurate than most competitors. There's a wide range of attachments available: Militech's 25mm MiniGL, a full-spectrum electronic sight for use with SmartGoggles™ (+600eb), an integral suppressor system (+200eb), and an extended magazine(45-md U-drum; 60eb).

Note:Suppressor reduces WA to 0, cannot be heard without cyberaudio (extended hearing range). Folding stock reduces Conceal from l to J, but firing while folded reduces WA to -1.

Source

 * Solo of Fortune 2, pg.34
 * Blackhand's Street Weapons, pg.30