Magpul PTS MS2 Mil-Spec Monkey Edition
This is a limited edition of the Magpul PTS MS2 Multi-Mission Sling as it comes with a Mil-Spec Monkey patch. The MSM patch will be random so you can't choose which patch you want include with it. The sling is in green colour and you can buy it at EB Airsoft for US$37.42. Description below is taken from the Magpul website.
"Driven by the operational experience of Magpul DynamicsSM instructors, the MS2 Multi-Mission Sling System was designed to give a versatile weapon-retention solution for a multitude of tactical environments and missions. As a standalone product, the rapidly-convertible MS2 allows an operator to leverage the maneuverability of Single-Point® attachment for direct-action, or two-point attachment for stability. Single-hand adjustments, quick-detach lanyard and positive-locking metal hardware provide flexibility and durability in a truly adaptable sling system.
Used in conjunction with the Magpul ASAP® plate (sold separately), the MS2 enables seamless transitions into an array of shooting positions without getting bound or fouled. The MS2 concept allows switching from Weapon Shoulder to Reaction Shoulder for shooting around corners, under vehicles, or to minimize exposure. The MS2 can also increase operator survivability by keeping the weapon in the fight in case of injury to the operator's shoulder, arm, or hand."