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May 2nd, 2014, 17:27
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#1 |
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MP5 Upgrade Hop-Up
Afternoon everybody, I recently picked up a CYMA MP5A4 as a new project gun and I was wondering if there are ANY aftermarket improved hop-ups. The cyma hop-up appears to function just fine but who knows how long that will last.
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May 2nd, 2014, 22:33
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#2 |
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You mean the hop-up rubber or the chamber?
For the rubber, replacing the hop-up rubber in a CYMA gun with a better one can give you a great increase in accuracy, in most case. For the chamber, the general rule is don't replacing a working-fine hop-up chamber unless there is a very good reason. A small variation in dimension (mostly, the length) can give you a very weird result and it is kind of a pain to correct it if you are not familar with this type of issue.
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May 3rd, 2014, 16:57
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#3 |
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My cyma mp5k with a stock rubber shoot 100-120feet And now with a bucking pdi w hold I shoot 150-170feet with a better groupping. Just change the rubber
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May 4th, 2014, 21:59
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#4 |
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I've already swapped out the rubber I was just curious if there were any upgrade hop-up units its my can't leave anything internal stock OCD kicking in :P
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May 5th, 2014, 18:22
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#5 |
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Not Eye Safe, Pretty Boy Maximus on the field take his picture!
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Are you getting perfect compression from the mechbox?
What brand and weight of ammo are you using? What kind of barrel is in there? What muzzle energy are you shooting at right now? |
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May 5th, 2014, 19:17
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#6 | |
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Quote:
2) Eliteforce .2s/.25s 3) Stock cyma 4) 300~ but yeah the point of this thread was just to see if any EXISTED to sate my curiosity. |
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May 11th, 2014, 01:20
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#7 |
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Sorry to hijack the thread
How can I improve seal and compression on the mp5k? I just installed a 247mm TB and new bucking for more accuracy.
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M4 MK12 MOD0, SBR, KC02 G17 (B. A. Level 2 Cert.) |
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May 11th, 2014, 01:23
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#8 |
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Not Eye Safe, Pretty Boy Maximus on the field take his picture!
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clean and regrease the cylinder, change any parts that have air leaks
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May 11th, 2014, 20:55
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#9 | |||
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Oh we do hate you, just never felt like wasting the time to give you a user title :P
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fire in semi with yer finger pluggin the nozzle. take the barrel and hop up assembly and plug all the holes but one with yer finger and suck or blow on the other hole to see if there are leaks. mp5's are prety good on seal like ak's
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Quote:
Quote:
FinchFieldAirsoft |
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May 12th, 2014, 14:38
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#10 |
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butthurt for not having a user title
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I'm interested in this as well. Gutting the compression system on these guns makes them pretty great, but the chamber itself is definitely a weak point. It works well enough left as-is, but since it's just crummy poly built to low-tolerance it has a hard time holding hop when set to anything higher than 'meh'.
It's pull-arm type but I'm not sure which (arm is hidden by the ejection port, NOT old TM/ CA front-pull), and eyeballing it indicates that wheel-type V2 chambers won't clear. It's not a 100% necessary upgrade, but it's pretty much the last link to making these decent guns pretty great, and the stock chambers will fail eventually. Edit: This is also important due to nozzle matching, and the stock nozzle is crap. Last edited by Cliffradical; May 12th, 2014 at 14:40.. |
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