(adsbygoogle = window.adsbygoogle || []).push({}); Does anyone know how to get easy BPK's while boosting?

it's a real pain when I get close to getting mastery for a gun and all i got left are the BPK's which take like ages to get 40 of

So if anyone has any tips and tricks, can you please share?

chain link fences

sheet metal like the little fence thing in scrapyard