I,m gonna get one but want your advice.They have them also in al.ally receiver.I handled one today and it was sweet to handle compared to the heavy steel receiver model.The al.is a little cheaper as well.I am getting either the T150D which is steel receiver 30 rd.stick and 50 rd drum.Or the T5 which is the same exact gun with a al.receiver.I,m concerned with realibility and longevidity with the al receivers.What do you all think?