Direct proof of use
Conflict Armament Research documented a Belgian FN Herstal Browning Hi-Power 9x19 mm semi-automatic pistol in a northern Syria case file covering small arms captured from Islamic State forces by YPG forces. The same dispatch says CAR examined weapons and ammunition captured from IS forces in Iraq and Syria between mid-June and early August 2014 and documented weapons deployed by IS forces in both countries.
The available public evidence supports the pistol as Islamic State-held or deployed conflict materiel recovered by opposing forces. It does not identify a named firing incident, individual operator, serial-number trace, or exact origin path for the specific Browning Hi-Power.
Sources: CAR Islamic State Weapons in Iraq and Syria
Timeline
CAR's dispatch places the captured-weapons examination in the first months of the 2014 war, after Islamic State operations around Ayn al-Arab and Ras al-Ayn in northern Syria and after the group's offensives in Iraq around Mosul and Tikrit.
Amnesty International later summarized the same handgun evidence in its December 2015 report on Islamic State armament, stating that CAR observed a FN Herstal Browning Hi-Power pistol, a Glock G19, and a Croatian HS Produkt HS2000 in one IS cache captured by YPG forces between mid-June and early August 2014.
Sources: CAR Islamic State Weapons in Iraq and Syria, Amnesty Taking Stock
Narrative
Within the 2014 War Against the Islamic State, the Browning Hi-Power appears in the record as a captured sidearm associated with Islamic State forces in Syria. CAR's case description is geographically specific to Avdoke, Syria, and lists the pistol alongside rifles, machine guns, sniper rifles, and other small arms documented from the same captured-materiel context.
The evidence is best read as recovered-materiel documentation rather than a complete inventory statement. Amnesty used the CAR finding in a broader review of Islamic State weapons in Iraq and Syria, but neither source provides a total count of Browning Hi-Power pistols held by IS or establishes whether the documented pistol came from Iraqi stocks, Syrian stocks, battlefield capture, or illicit transfer.
Sources: CAR Islamic State Weapons in Iraq and Syria, Amnesty Taking Stock