so I'm finishing up my dmr build, and need advice about parts.
the gun is m4 based, and the longest possible inner barrel i could hide in it is 560mm, I'm using a pre built king arms mech box with an m120 spring and a non ported cylinder,it is front wired. the hop up unit i bought is a madbull ultimate hop up unit, and an scs spacer.
main question is ideal barrel length/brand, hop up rubber, motor and battery. i prefer non lipo batteries, and was thinking of a peq box, there is no room in the stalk for any battery. also a reliably feeding 20 round style mag.
emphasis on accuracy and range. 380-400 max fps
