Ok tks for the info :)
now all my parts are on the way , is very close to my home :)
so after I have assemble them will see anything short , and will post the pic here :)

cheers

Hi ! What is the meaning of 100:200 for ?
And also the 16:1 and etc ... which one is better ?
I know is the gear ratio but let say I use m150 spring so which ratio is better 14:1 or ... ?
Also if I use 150 spring and etc ... what type of motor can drive it ?
tks

cheers

Higher ratio means more torque

neo magnet high torque motor with lipo battery, you can probably get away with using 18:1 gears
If you're using an NiMH battery you'll probably want something like 26:1 gears

Lower ratio means faster rate of fire and better trigger response.
Any reason why you're using an M150 spring anyway?

Tks for the info again , I use 11.1 lipo battery , and the 150 spring is just want to know only , my g&p gear box is m120 spring , so just need to know more first :)
Oh by the way which scope you all recommend to use to ?
Cos I am now still consider which scope and I have long eye side problem :(
Tks


cheers

any scope you like.
3-4x is most popular

Ok I got three in mind , ACOG , 3.5-10-40 and OS5019 DOT sight , so which u all recommend ?
Tks

One more question is , is it the m4 aeg can become rifle sniper ?
What is the barrel length ?
Tks