LPVOs cost a lot, also this is a 4x LPVO which considering it’s caliber is very less, Americans use 4x ACOGs on M4A1s shooting 5.56x45 NATO, while SiG-716 has 7.62x51 NATO considering which an 6x/8x LPVO should be better. But the P4Xi costs less than a grand so most likely will be selected.