Rexton 42s/ Siemens mini receiver 2.0 in 4p

I am trying to find out if I can get the 4p (4 length power receiver) in the mini receiver for my Rexton aids. I am sure that they are offered for the Siemens 7bx but Costco availability is a question. Thanks

Even for Siemens, the 4-length miniReceiver 2.0 is only available at the M power level.

thanks for reply