Found out that the built in scope isnt that useful/good on this gun. Thats why i really want to change it. I was planning on getting rid of the G36k carrying handle and replace it with a G36c one. I was wondering if i could even do this and if i could where would i buy the rail. Btw my gun is a G36kv by Umarex. Others things i would like to do would be like to add a RIS system instead of the regular handguard. This way i could mount a forgrip and peq box. The battery is a beech to put in the hand guard so the peq box would make it easier. Might even upgrade to a lipo. Also if i could switch out the carrying handles i was going to put a holo and magnifier. Also I recently took off the orange flash hider and im looking for a cooler Any suggestions on where to get these things and which brand or type to get are welcomed.