(Description copied from official document AR/PD 10-03A)
The X – Side Ballistic Insert (XSBI) worn by ground troops. When placed in the Outer Tactical Vest (OTV) (w/ add-on carriers) / Improved Outer Tactical Vest (OTV / IOTV) (as a component of the Interceptor Body Armor (IBA) system) the insert will provide ballistic protection from specific 5.56 mm and 7.62 mm rifle rounds.
Stock Number Reference:
X-Threat Side Ballistic Insert, XSBI
Assign Date: 2010-10-14
Item provided by G.I.’s friend.