1. To upgrade the spring what else if any needs to be upgraded???
2. Are all the springs pretty much the same, between brands??
3. Is it a simple upgrade or something that is involved???
4. Where can I get a good tightbore for the M4???
And you should already be shooting around 350 FPS with the stock gun.
And TJ will know where the good deals are on tightbore barrels. For some reason, I was under the impression that the CAs had tightbore barrels already - I don't know if that is true or not, though.
CA and tightbore is a contradiction. :) The CA AK105 had an amazingly cheap barrel, I wouldn't be suprised if it wasn't an 8mm or something.
Anyhoo, to answer your questions:
Anything up to a Systema M120 or PDI 170% you'll need metal bushings and shims, minimum. Over that you're beyond our FPS limits and getting into the realm of new gears/pistons/etc, which you probably want to avoid. A spring guide might be nice, but not too necessary at that spring level. And keep in mind a M120 is the absolute extreme edge of our FPS rules, and you'll be really pissing off people if you get too close to them. A 150% would be better.
Nope. I find PDI to be easier to install over Systema, and nicer on your mechbox. Other brands I haven't had any experience with.
It's opening the mechbox, home of many tiny things that have to be exactly right or you'll sieze or strip it. My first time was an 8 hour trip.
Anywhere. Systema 6.04BS is a good one. It's doubtful that the TN or Prometheus 6.03 are worth the extra money.
Thanks for all your input. Seems like there is ALOT of work involved. More than I want to attempt. I'm happy with the way it shoots right now. I suppose I'll just have to wait for something to break and then attempt to make upgrades.
i prefer the tn, but that's just because they look and feel they they cost more to make. also there are some new barrels on the market that have really been getting attention. As far as springs it seems like the systema ones lose fps over time, the others not as much. PDI is nice, the new hurricane ones are good too.
It depends on how comfortable you are mechanically, if you're willing to spend the time, and you're ok with it failing much, much sooner than stock. Mine was 8 hours of pain because I had the gear timings off and had to reassemble my M16 three times. Harrowing, to say the least. All in all, it's a good learning experience.
Print out Arnie's service manuals, AirsoftPlayer's Spring Upgrade Guide, ASP's Systema FTK Guide and the "starter" position for new shims and you should be good to go. Some T10 drivers and a clean cloth to work on and you're in business.
It depends on how comfortable you are mechanically, if you're willing to spend the time, and you're ok with it failing much, much sooner than stock. Mine was 8 hours of pain because I had the gear timings off and had to reassemble my M16 three times. Harrowing, to say the least. All in all, it's a good learning experience.
Print out Arnie's service manuals, AirsoftPlayer's Spring Upgrade Guide, ASP's Systema FTK Guide and the "starter" position for new shims and you should be good to go. Some T10 drivers and a clean cloth to work on and you're in business.
Yeah I'd put in the time but its not like you go can down the street to get some parts or springs that decided to jump off the table and out the window. Can't I just get an already upgraded Mech Box with a hotter spring already in it. So its like a direct drop in?
