I have the inital Home office research evaluation report for the Enforcer
It states that there were 3 short listed scopes for the Enforcer.
1. Pecar V2 S 4-10x
2. Pecar 11 S 6X
3. Leatherwood Art II

The leatherwood was the best performing scope but was discounted due to price (£70) and availability.

The Document states that either of the Pecar scopes were sufficient to do the job, but would recommend the V2 S 4-10x as the prefered option.

The final specification document only listed the 4-10X and the iron sights
for 'emergency use' fitted by Parker hale. I would imagine that Forces buying for night sights would not pay out for Pecar scopes if they were not needed.