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G&g tr16 556 G2 spring upgrade

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Old January 8th, 2019, 18:58   #1
The_Jelly
 
Join Date: Jan 2018
G&g tr16 556 G2 spring upgrade

Hi guys, new to the forum but have been actively reading forum posts and the community here sounds awesome and extremely helpful.

I have been playing airsoft for just over a year now and have managed to accumulate 3 guns. The lastest purchuse is the TR16 G2.

I have had 2 games with the gun and was a little disappointed at how far it shot. Now I know the limitations of the AEG platform regarding distance but I did feel as though the gun could offer a little more. I decided to try a maple leaf bucking and nub and this did assist tremendously as the stock blue fang type bucking was useless. I also tried a flat hop with a prommy purple bucking and modify flat hop nub but it was very close to the maple leaf. After testing the 2 hop combinations I decided to chrono the gun and saw it was only shooting 350fps on. 20g BB's, with about a 3fps varient between shots.

Our local field limits set DMR's to 450FPS and I would like to get gun just over 400fps. Seeing as it already has a Double oring cylinder head and air nozzle, I believe the next path is a spring?

I have my eye set on a guarder sp120 to put me between 400fps and 430fps depending on how good the air seal is. I will be using the gun stock for a few more Games just to allow the gun to bed it self in nicely before changing the spring out, but I would just like to confrim that :

1. The extra fps will aid in slightly further shots?

2. The FPS target is roughly accurate with the SP120 spring?

3. Sp120 or m130?

4. It is safe to do so and no other part requires upgrades?

I look Forward to your input

Sent from my SM-G965F using Tapatalk

Last edited by The_Jelly; January 9th, 2019 at 03:09..
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Old January 11th, 2019, 11:41   #2
Zfurlong
 
Join Date: Sep 2014
Location: St. John's
1 - possibly, however not necessary. I have an echo1 ak that clocks in at 320 fps on .2's. and when I use .3's in game I'm reaching 220 feet with it
2 - yeah a 120 is roughly 400-410 depending on air seal as well as other parts inside the gun
3 - 120 would be the go to generally
4 - yes it is safe to do so without other parts, however you may need to correct the aoe (angle of engagement) on the piston
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Old January 11th, 2019, 12:24   #3
The_Jelly
 
Join Date: Jan 2018
Quote:
Originally Posted by Zfurlong View Post
1 - possibly, however not necessary. I have an echo1 ak that clocks in at 320 fps on .2's. and when I use .3's in game I'm reaching 220 feet with it
2 - yeah a 120 is roughly 400-410 depending on air seal as well as other parts inside the gun
3 - 120 would be the go to generally
4 - yes it is safe to do so without other parts, however you may need to correct the aoe (angle of engagement) on the piston
Since this post I have found out that the gun ships with the sector gear short stroked.
The piston is 15 tooth and the sector gear is 13tooth. So the gun actually has an m120 in it and shoots 350FPS due to the short stroke. Would it make more sense to replace the sector with a 15tooth one so that I can get my FPS back to ~400FPS with the m120?

I hear you on the fact that FPS is not everything. Do you have an R-hop, flat hop, or a maple leaf system?

It's a new gun I to be honest I wouldn't like to take the gear box apart if I can avoid it. I'd rather run it stock until something breaks. The box does have a quick spring change system which is why I considered the spring upgrade. What do you suggest?

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Old January 12th, 2019, 04:42   #4
Styrak
 
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Join Date: Jan 2007
Location: Saskatoon, SK
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Quote:
Since this post I have found out that the gun ships with the sector gear short stroked.
The piston is 15 tooth and the sector gear is 13tooth
Where did you find/see that?
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Old January 18th, 2019, 23:37   #5
Cr0nik
 
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Join Date: Jun 2011
Location: Etobicoke/GTA
Quote:
Originally Posted by Styrak View Post
Where did you find/see that?
Ya boy Fritz here has a gearbox takedown video, its the MBR 308 but iirc its the same internals as the 556, check 37min 30sec and you can see the gearset:
https://www.youtube.com/watch?v=StFef4l-6_w

Quote:
Originally Posted by The_Jelly View Post
...the stock blue fang type bucking was useless.
I bought the 556 G2 last spring, and while I really like it overall for a stock gun I completely agree; the stock hopup rubber & bucking suck.
The nub is really soft and the two contact points on the bucking are tiny.
The stock setup feels like the first 90% of the hop up adjustment has little to no effect, while the last 10% provides a little hop.

Quote:
Originally Posted by The_Jelly View Post
...I was a little disappointed at how far it shot.
Out of curiosity what was yours shooting out of the box? Mine was ~370-380 and I was able to engage people out to 190-200 ft with... I think I was shooting .28s or .30s.
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