fps with upgrades

[TurtleBoyPW5]

Anyone have any idea what a Systema Progear Gearbox with all systema internals with a m120 spring would crank fps wise with a 6.04 barrel?

the guy sellin it says 450+ but a m120 should only get around 400 fps right?

thanks

[Andree]

from what i have understood m120 is just like (meters)3.blahblahblah x 120

that will probly get around 375, + the tight bore that will add a bit, but shouldnt have a dramatic result! im saying your right in assuming around 400fps

[Bigmack]

my G3 with a Tightbore and M120 fires between 403-408 FPS.

[TurtleBoyPW5]

so all systema internals dont boost fps on the spring and barrel will???

[Bigmack]

Gears do not do anything to boost FPS.
neither does a tappet plate, bushings, shims, spring guide, selector plate or anti-reversal latch.

The only things that affect FPS are:

Spring
Nozzle
Piston
Piston head
barrel


upgrading the spring is the easiest way to gain FPS....the rest add smaller bits to the FPS, however.

for example, a systema nozzle might add 3-4 more fps than the stock one.



what type of budget do you have, and what kind of FPS are you looking for?

[TurtleBoyPW5]

well i have a 350 budget currently but im lookin to buy a m4 used for a guy who didnt sell it on ebay...
for 400 i would get a m4 with a custom camo job done, systema drop-in progear complete mechbox with all systema internals with m120 spring, 6.04 tn barrel, high cap, custom battery...... i think its a good deal wut do u think? the drop in mechbox is worth 300 from dentrinity........ thanks

[luke213]

It's ebay it's just about like buying AirsoftClub's new and greatest AEG, your pretty sure your gonna get screwed it just depends how bad.


Luke

[TurtleBoyPW5]

1. auction ended no one won hes sellin directly to me if i buy
2. he has a feedback of 99.4% out of 491 people sounds pretty reliable

[luke213]

Well I was making a joke ;D To bad it's hard to tell on a forum, though if he's reliable it sounds like a good deal, good luck with it.


Luke

[Andy]

With a $200 buget, what could one get? I would love an upgrade to 340 or 350 fps but without the gears inside stripping. What do you say I should do?

[Knief]

Something lower than a 150% spring and some metal bushings. Then, have somebody who knows what they're doing instal it. That's the best way to insure that your gun lasts a long time. I've seen too many gears strip because they were shimmed wrong.