Per Perry Q&A:
"A9.4 & B30.7 - Situation is German HMG (7FP) and German MMG (5FP) firing at > 16 range at an infantry target in a pillbox for a base total of 12FP. Are MG attacks vs unbroken, non-overstacked, good order infantry in a PB at > 16 range halved for concealment, i.e., is the FP of...