G&P m16a1 spring recomendation

[marve114]

Thanks for taking the time to look at this for me
Been tinkering with this for yonks now but recently been doing a few upgrades to improve range and accuarcy etc......

Mad bull hop unit
Mad bull barrel
Guarder bucking and nub
Ive tried a gaurder sp90 fps was around 290-310
Just tried a systema m100 fps was around 365-370

Im looking for a figure of 350fps With the hop full off and i really dont fancy clipping the spring

So what you thinking guys ? tel me a spring please

cheers
lee

[JOE90]

Re: G&P m16a1 spring recomendation

shs m90 is what i would use, as it seems like your airseal is very good hence the high fps on an m100. M100 should be 328fps but other factors increase this such as tightbores and a wicked airseal. Also systema is one spring id steer clear of, they have tendencies to snap. In all honesty though id take 1 coil off your m100 and heat the chopped end till it glows red then close it off, should give you the desired effect of 350 or there abouts.....shame its a systema lol

[marve114]

Re: G&P m16a1 spring recomendation

Cheers joe
Il look into the shs90 now see what my good friend google says

[JOE90]

Re: G&P m16a1 spring recomendation

also gaurder used to make good springs, seems like people have been having issues of late, with that combo of parts your using you should be around 335 to 350 with the sp90? Panoptes had issues with guarder too i think. Hence why i mentioned shs

[marve114]

Re: G&P m16a1 spring recomendation

Yeah Im tempted to quickly strip it down and clip and heat it up bend it etc what end would you say cut ?

[JOE90]

Re: G&P m16a1 spring recomendation

Cut the end which has the coils spread further apart. Heat it over the cooker so your heating just one coil, then when its red hot, push it down (red hot end first) on something hard and preferably non flamable until it shuts up and looks as if youve just removed it from the packet. I then check for any sharp edges on the cut end and dremmel them smooth. Just head out to replicate the look of it when new, but with one less coil.

[marve114]

Re: G&P m16a1 spring recomendation

Sound sounds piss easy here i come m16 ready or not !

[JOE90]

Re: G&P m16a1 spring recomendation

Go for it bud, reprt back fps reading after a couple hundred rounds have been put through it.

[Andrew March]

Re: G&P m16a1 spring recomendation

An M100 spring will give you 340fps, an m90 will give you 327fps but these are King arms springs.

Systema main springs are significantly stronger with a systema m100 producing on average 365fps

Guarder sp100 springs will give you 387fps but the sp90 will give you 339fps (that's what i would go for).

[JOE90]

Re: G&P m16a1 spring recomendation

Speaking out your arse. M100 = 100 meters per second also equalling 328 fps get your facts right before acting a bellend and disliking somebodies post that was more factual than your own.

Marve tried an sp90, it gave lower than 328, now this is probably because guarders used to be rated using .25g bbs, but are now rated with .20g bbs and now give out the correct reading. IE m100= 328fps

[Andrew March]

Re: G&P m16a1 spring recomendation

Bullshite, you need to check your spring ratings mate before you start gving advice out, since different manufacturers use different spring systems from linear, non linear and irregular pitch, have a search for AEG spring comparison guide then come back and say sorry dickweed!

[Andrew March]

Re: G&P m16a1 spring recomendation

Can't link to the chart because it's on another community but I'm sure you'll find it, OP have a search yourself for the same thing that will give you your answer.

[johnnyj]

Re: G&P m16a1 spring recomendation

the good old spring fight :P it all depends on make no 2 springs are the same.

my testing last year on a gov tested Skan prol,series 3 diamond chrono ( firearms chrono ) using a standard ares g36c ( airseal sorted and using a standard full cyclinder )

all springs are new when tested
Ka m90 = 302ave
asg m90 = 370ave
hurricane = 308 ave
shs m90 = 333 ave ( was the old type , been told there closer to 300 now )
guarder sp90 = 310ave ( fitted a new G sp90 2 weeks ago to a new ka m4 new result on same chrono was 330 )

Ka m100 = 344ave
asg m100 = 384ave
hurricane m100 = 349ave
shs m100 = 360ave
guarder sp100 = 355ave

now its all very well giving you these results But if they go in a gun with a longer barrel you will see fps go up again ( done using a new spector with the cqb upper and a standard m4a1 upper , with the cqb front set using a KA m100gun is a safe 340 fps when fitted with the m4a1 upper it was shooting 360 fps )

[JOE90]

Re: G&P m16a1 spring recomendation

Even if i found i was wrong i wouldnt say sorry to ya...march on

[JOE90]

Re: G&P m16a1 spring recomendation

Thanks john, my main statement was m100 is meant to be equal to 328fps but setups vary from gun to gun. If i as wrong then fair enough but dislikes piss me off when all you have to do is quote and explain. Instead of trying to make me look like a prick. Also some manufacturers like guarder used to rate their springs using .25g bbs as a guideline weight. Another reason why fps to meters is out when we use our .2s to chrono.