[lurkingknight]

to get the most out of any part in airsoft, you need to pay attention to fit and finish of individual parts and how they fit together... you need to be perfect on your airseal if you want to push accuracy beyond 60m. Often times you need to have a fine eye for detail and a LOT of patience because you'll be taking your gun apart and putting it back together A LOT.

If you don't know what it is, look it up. A few of us are great supporters of the build philosophies found at airsoftmechanics.com Parts discussed there can be purchased direct from the people who make them or import them (they are a US based forum) or you can hook up with stealth here from airsoftstore.ca who provides most of the parts used by builders on ASM.

a tight barrel does not necessarily make a good barrel. The most important thing about a barrel is the consistency of the finish inside. the smoother and more consistent throughout the length, the more accuracy you will get. It's not length nor tightboreness that gets you the accuracy.

Air seal is EVERYTHING. After that, it's quality of hop up and hop. Read up on hunterseeker5 and r-hop on asm. There's also quite a number of discussions here cropping up since a lot more people this year seem to be trying it out.

After that, it's the quality of your ammo. After you minimize the slop in everything, the most variance you'll see is in quality ammo. All BBs have airbubbles or issues with balance when spinning in flight. It's like an out of balanced wheel, it will wobble and destabilize in flight because it's lighter on one section so it will change the flight dynamic. And since no 2 BBs in the bag are exactly the same, you'll get a spread pattern.

After accuracy you can do crazy things like faster triggers and higher rates of fire... but the consistency from shot to shot is an elusive unicorn to chase in most cases.

If you don't want to deal with all that, live with a standard hopup and what your gun has to offer as is.. very few AEGs have that sort of reach into the 200ft range.