As you can see from my post count I am a newbie to the MKA, however I did cut mine at just over .900 and it still cracked! Just wanted to say I have talked to Nancy at Firebird and have to say she is great to talk to. Very nice and a pleasure to deal with. I'm on the waiting list for a lower as in the previous posts of mine and to be frank.....buy a lower from them and don't cut your stock. It may work for some but it's not worth the irritation IMHO!!! I won't say who's parts I have because I don't want to give a wrongful accusation. My cut at .900 was my decision and not the instructions so