k, AAsurplus/AAairsoft is EXTREMELY BUSY!!!
the man gets like 200 emails a day, as far as i know he is only responding to PURCHASES. if you want something send him a part number as he will not look up the part number for you. any question about airsoft kit, look up reviews or ask on the boards. and questions are gear or kit, ask a JSOC member or ask on the boards. Hes not a FAQ and i dont think hes responding to questions anymore.
I'd be happy to help you with questions about AAairsoft/AAsurplus.
Next time i see him online I'll ask him if the CA M203 comes with mounting hardware