Выяснил почему ставят такие прицелы - это “Sniper No. 2 system”, оружие для споттера в снайперской паре. У обычных шарпшутеров используются АКОГи 6х.
The main difference between the Sharpshooter and Sniper No.2 is made up by the sights: the Sharpshooter is fitted with a Trijicon ACOG 6X sight, compensated for bullet drop out to 1200 meters and fitted with a secondary Close Quarter Combat CQB sight on top, the Trijicon Ruggerized Miniature Reflex RMR. The Sniper No. 2 is used with a more powerful scope sight Schmidt & Bender (possibly migrated from the L96/L118 rifles being progressively retired) for day engagement and with OSTI MUNS night sight for nocturnal use.