MP5K upgrade didn't work for me (need help)

[nemesis]

Few days ago I decided to upgrade my TM MP5K.

Before upgrade it was shooting around 220fps. I changed some internal parts.

changed:


piston
piston head
spring (ms 110)
sector gear
bevel gear
hop-up rubber


after that it shooting at 260-270fps. I tried lower spring (ms 100) and it didn't work at all (still shoot 220fps). I don't have any idea why it is shooting much less than 300fps with ms110 spring.

Does anyone has any idea why ???

[nemesis]

actually I brought it to guy who works in http://www.cybermaniaclub.com/. He opened it and said it just need to change only 2 springs, piston and so on. he also cleaned inner barrel with silicon oil. Do you think it would be a sealing nozzle???

Anyway. I'll bring it on next game and you can bring home and see more. The mechbox comes apart like this but it is more easy I think. I watched http://www.youtube.com/watch?v=d5C7NRSMtXk this link for review.

[krobinson103]

The barrel could have been the problem. That or the hopup. I've had a gun shoot 40fps slower because the barrel was dirty. Don't be too effective in your repairs or you will find that a 110 spring shoots at 320-330fps and thus your gun is out of the game :P

[nemesis]

Yeah. I didn't wanted to go over 300 but even with sp100 spring it was shooting 220 (no change at all). I am thinking about changing hopup, nozzle and inner barrel too.

[krobinson103]

What version mechbox? replacing the selector plate is really easy for the v2/v3. You just need to make sure that the problem isn't with the selector lever and spring. I fixed that on frankengun by simply replacing the spring with one I had in the parts bin.

If the problem lies with the selector on the gun itself the only way to fix it is to get a new grip and selector. Not easy to source.

[krobinson103]

That's going to be hard to find. :(

[Terminator]

Here it is! It is the same as the Echo-1 MOD5K. I don't know where in Korea to get it but here is one from the States. If some one has and APO address they can have if for you in about 7-10 days. Shipping is around $10 through USPS.

http://www.airsoftpost.com/echo1-selector-plate-mod5k-series-airsoft-p-30715.html

[ackme]

I can try order if for you if they will accept my Korean address.

*Update, they will email me a shipping quote, I'll post it here later and finalize the order if it's an acceptable cost to you.

** Update, it appears they processed the order without giving me a shipping quote or charging for shipping, I confused. I'll post back when I know more.

*** Called them, they said they would Email me a shipping quote tomorrow, but they can ship it here.

[ackme]

ummm.... I already ordered it for him

[ackme]

Sweet... :)

[nemesis]

My MP5K PDW is not working again. Rob, it wasn't battery... haha. when I got home it didnl't work, so tried my G36C battery... nothing happened. I really don't have idea. well... it sometimes works fine ... but sometimes ... CRAPP.

Maybe, its better to go to 2roy after I got selector switch. haha

[nemesis]

Maybe I moved selector switch. thats why it not working again... damn ... I need to change with new selector switch.

[krobinson103]

If the switch is a problem you can always lock the selector plate into auto with a little black tape. It will ensure the gun shoots until you can get it fixed properly.