Spring upgrade

[Dannyreader]

Hi 

rather new to skirmishing

curretly running a CAA m4 cqb 7” 

link to gun specs: https://actionsportgames.com/en-gb/productcatalog/products/guns/rifles/caa-m4-cqb-7

which is shooting 285-290fps with 0.2g bbs. 

Im looking at increasing my FPS to 335/340 to keep with my site rules. 

Currently have an

aSG Ultimate Mil-Spec AEG Spring M95 fitted which is giving me my current FPS. 

Been advised to try and go for a m105 spring as this would give me a FPS just under the site limits 

since my last chrono I have install a Rhop bucking to help with range due to reviews but also think that my FPS need a boost. 

As at my last skirmish which was outdoors I was struggling with range but also some player not calling their hits I think this was due to them where thicker clothing or gillies and not feeling the hot as majority were calling hits throughout the day. 

 

[Asomodai]

I would be looking at your air seal components. You should be getting more FPS then that on an M95. 

 

[Dannyreader]

I would be looking at your air seal components. You should be getting more FPS then that on an M95. 

Click to shrink...

Ok so should I be looking at more the air nozzle cylinder head and the fitting into the Hop up unit? 

 

[ak2m4]

ideally you need to test the compression of the piston, cylinder, cylinder head and nozzle, here's a quick YT to show, there are plenty others

if you don't want to open the gearbox up then you can just place in a stronger spring to compensate but this will cause slightly more strain on the gearbox
 

 

[Nick G]

As everyone says, check your compression and seals. I run an M95 spring in one of mine and it chronos  at about 300 on .25's ( our site Chrono's on Joules using game weight BB's) which is about 335 ish on .2's Springs do vary, some are stronger than others at a given rating , but I would expect you to see comfortably over 300 fps

 

[Dannyreader]

As everyone says, check your compression and seals. I run an M95 spring in one of mine and it chronos  at about 300 on .25's ( our site Chrono's on Joules using game weight BB's) which is about 335 ish on .2's Springs do vary, some are stronger than others at a given rating , but I would expect you to see comfortably over 300 fps

Click to shrink...

Thanks, so should be good with a m95 spring providing air seals are good. 

2 hours ago, ak2m4 said:

ideally you need to test the compression of the piston, cylinder, cylinder head and nozzle, here's a quick YT to show, there are plenty others

if you don't want to open the gearbox up then you can just place in a stronger spring to compensate but this will cause slightly more strain on the gearbox
 

Click to shrink...

Thanks for the link, I will give it a go and see what I find. Idealy I don’t want to put more wear on the gear box so will go and check for air leaks, is it worth checking between the hop and gear box as well