Check the listing for details. BL FORCE VICKERS STND ISSUE SLNG BLK. Color: Black, Condition: New. Listed at 90.95 USD. The Standard Issue Vickers Sling has become the world's standard in combat weapon slings. After extensive testing including combat evaluations, this sling is issued with the USMC M27 Infantry Automatic Rifle and authorized for use with the M4, M4A1, and M16 series weapons.