This weapon is referred to as a '''Specs-docs only''' weapon. It cannot be normally found in the Mazes, and will only be available after completing the following requirements:
* Turn in the following to the Proving Grounds engineer, at the [[Calfair Sector ]] workshop:
** [[Specs docs]]: ''#FJ051 - 7.62mm caliber heavy barrel specifications cut down to submachine gun length (8.9 inches)''
** A [[G3A3]] and an [[HK21]], which will be used for conversion into this weapon.
=== Vollmer Tactical ===
''Yes, even the Vollmer can be tacticooled up. This update package installs a retractable [[M4]]-style stock and a quad-rail system, comprised of a tri-rail on the handguard and an HK claw-to-NATO rail adapter, allowing you to use more common optics.''
Cost: [[File:Parallar symbol.png|10px]]'''500'''
Modifications:
* Stock type: Becomes '''Retractable (RS)'''
* Optics: Becomes '''NATO mount'''
* Lights: Becomes '''2x Long interface'''