I bought a Really cheap base gun for I think on Airsplat for 160ish with shipping and coupons.
The internals I bought a "fully" upgraded gearbox from evike that has an M160 spring. Here is the link:
http://www.airsoftpost.com/product_info ... s_id=31564The gearbox was 110+ coupon code for 15% off.
I had bought a musumne barrel with new hop up/spacer, came to 60 from airsoftgi
Then I had to upgrade the motor, I run a G&P M160 motor. Came to 70 I belive from evike.
I had also bought a mock silencer for 30 from airsplat to make the barrel 650mm.
The base gun came to Around 420 some with all the coupons, I used coupons on every order that saved me alot of money, About 100 dollars.
The Gears and piston on the gearbox are not THE best, But I plan on upgrading them when they brake, but nothing should brake for a few thousand rounds. They do work for what they are made to do though.
I went the cheapest route, I will need repairs in the future but its not big deal as I have airsoft experiance and a great tech. You can go With a Fancy G&P and spend alot of money for the base gun, But all in all, the internals come down to the same. You will be using a High power M150+ spring. You will be using a Neodinieom magnet motor, steel gears, and a high quality tight bore barrel. There is Some difference between High quality sniper internals and what I did, But not enough difference to have the total come over 1000 dollars. Just because you spend a thousand dollars for parts on one gun will not give it some magic power to shoot like a real gun. Theres only so much u can do to max out an airsoft gun. Well thats me .02