This is a UAE army sniper rifle TADS KS-11 and ballistic calculator Sniper PRO 4000 by Vladislav Lobaev.
Sniper Rifles in 3 main calibers — 300WM, 338LM, 408CT (other calibers are optional).
LOBAEV Journal
The Russian gunmaker's source
Video: UAE Army Sniper TADS KS11 by Tawazun Advanced Defense Systems
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Haroo Mambooroo