I find alot of the police events I come across spawn the pioneer alot. Sometimes I'll get 3 pioneers from the one police event. I think it's great that they do spawn on them but would like to see them rarer and make other "police" guns more common there for example the ssg rifle the bl 133 shot gun and the sg5k as well as police clothing and armour (both stab and press vests).
This would make the police events a bit more varied in what can drop.