SACair Forum

So I got a KWA m4, and its shooting like 410, and I want to get it just under 400. Aside from snipping/replacing the spring, what can I do (preferably free) to drop the fps?

[quote="mfroniewski"]So I got a KWA m4, and its shooting like 410, and I want to get it just under 400. Aside from snipping/replacing the spring, what can I do (preferably free) to drop the fps?[/quote]

You could add a tightbore in it that would lower the fps a little.

[quote="oneshotkill"]You could add a tightbore in it that would lower the fps a little.[/quote]

[quote="oneshotkill"]You could add a tightbore in it that would lower the fps a little.[/quote]

It lowers it because theres more friction for the bb so it goes slower but more accurate.

[quote="mfroniewski"]So I got a KWA m4, and its shooting like 410, and I want to get it just under 400. Aside from snipping/replacing the spring, what can I do (preferably free) to drop the fps?[/quote]

[quote="oneshotkill"]It lowers it because theres more friction for the bb so it goes slower but more accurate.[/quote]

Ya in my 416 i have a spring that puts it a 400 then i added a tightbore and it lowered to 340 but its more true. the barrel exteneds out.

[quote="Austen"][quote="mfroniewski"]So I got a KWA m4, and its shooting like 410, and I want to get it just under 400. Aside from snipping/replacing the spring, what can I do (preferably free) to drop the fps?[/quote]

[quote="oneshotkill"]Ya in my 416 i have a spring that puts it a 400 then i added a tightbore and it lowered to 340 but its more true. the barrel exteneds out.

[quote="oneshotkill"]Ya in my 416 i have a spring that puts it a 400 then i added a tightbore and it lowered to 340 but its more true. the barrel exteneds out.

No I had a pinical do it, it may be that my gear box is old cuz I swiched them out.

what bore is it 6.01? 6.03? which

Im using elite bbs and I had Paul at pinical airsoft do the work.

[quote="oneshotkill"]Im using elite bbs and I had Paul at pinical airsoft do the work.[/quote]

[quote="KaLTHRaX"][quote="oneshotkill"]Im using elite bbs and I had Paul at pinical airsoft do the work.[/quote]

[quote="oneshotkill"]Ya in my 416 i have a spring that puts it a 400 then i added a tightbore and it lowered to 340 but its more true. the barrel exteneds out.

[quote="KaLTHRaX"]... just cause a "professional" install it doesn't mean it was done correctly, [/quote]

[quote="snookles"][quote="KaLTHRaX"]... just cause a "professional" install it doesn't mean it was done correctly, [/quote]

I heard 5.99mm tightbore barrel works wonder bring the fps down to whooping 0fps :wink:

[quote="Reincarnation..."]I heard 5.99mm tightbore barrel works wonder bring the fps down to whooping 0fps :wink:[/quote]

[quote="mfroniewski"]So I got a KWA m4, and its shooting like 410, and I want to get it just under 400. Aside from snipping/replacing the spring, what can I do (preferably free) to drop the fps?[/quote]

[quote="mfroniewski"][quote="Austen"][quote="mfroniewski"]So I got a KWA m4, and its shooting like 410, and I want to get it just under 400. Aside from snipping/replacing the spring, what can I do (preferably free) to drop the fps?[/quote]

[quote="oneshotkill"]It lowers it because theres more friction for the bb so it goes slower but more accurate.[/quote]

shakes his head...

[quote="wraith667"][quote="oneshotkill"]It lowers it because theres more friction for the bb so it goes slower but more accurate.[/quote]

leaving a spring compressed or uncompressed doesnt matter

that may do it...PPA springs get velocity reduction up to 30 FPS when the spring is left compressed...

like said before,its much easier to just have the spring replaced.why would u go through all the trouble of compressing,decompressing,cutting,etc. the spring?keep the stock one so if you ever want it back in the gun you can.