BO Manufacture's take on the HK416 produces the BO 416 Delta 13 for their SWAT and it's now available at Pro Airsoft Supplies for £609.99... "Meet Black Ops Manufacture's latest offering the Delta 13. This is stunning rifle is based on the now world famous HK416 (Ask any SEAL, Norwegian, Australian, KSK Operator, Polish, the list goes on!).