Corner Shot Weapon System (CSWS), Trikaal, is a special purpose weapon being developed by Armament Research & Development Establishment (ARDE), Pune. It allows the firer to see and engage an armed target without exposing himself from any counter attack. Two different versions of CSWS are being developed—one to mount and fire 9 mm pistol and the other as a platform for 40 mm Under Barrel Grenade Launcher developed by ARDE

A team of users led by Brig PS Sangwan from the office of the Director General, Rashtriya Rifles (RR), New Delhi participated in User Demonstration Trials (day and night), during 12-13 March 2019 at the Pashan range at ARDE. Both versions of CSWS were tested and evaluated for verification of technical parameters, viz., weight, length, trigger pull, D/R/I, etc., by the users. The system complied with all the parameters as laid down in the PSQR. Users have recommended the conduct of UATT and finalisation of GSQR