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Old November 3rd, 2011, 18:23   #1
supermohawk
 
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Hop up rubber colour coding

I am looking at putting a better hop up rubber in my gun. As I have been shopping around I have become quite confused on which rubber to use. What rubber would be best in a stock CYMA AKS-74U, firing ~380fps.
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Old November 3rd, 2011, 18:34   #2
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There's no specific colour coding. Different brands may use different materials that affect the color of the product. That's about it.

Personally, I like the Guarder Clear hopups. The seem to perform best overall in my guns out of the various ones I've tried. And most of my guns shoot in 370-400 fps range.
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Old November 3rd, 2011, 19:33   #3
ILLusion
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PDI W-Hold. They're new, but I've gotten great results from them so far, and all my customers love them.

Has a v-notch, and improves seal via two thicker gauged bands to squeeze between the barrel and hop up chamber.
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Old November 4th, 2011, 00:02   #4
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My go to for <400 FPS setups will always be Prommy Purple or Guarder Clear. Maybe a Firefly but I haven't heard much about people using their AEG version buckings, typically the FF VSR buckings are used in upgraded VSR's (other popular companies include KA, and 9Ball).

Although the PDI W-Hold does sound pretty interesting... Maybe I'll have to try it out one day.
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Old November 4th, 2011, 01:48   #5
ILLusion
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I've used the Firefly ones as well, and thought they were great... until I tried the PDI W-Hold. It took the great features of the Firefly (v-notch plus durability), and expanded it with a greater seal.

I'd place both of those above Prometheus and Guarder Clear.
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Old November 4th, 2011, 02:43   #6
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Prommy purples myself. But now I am intrigued by these PDI W-Holds. Where can I get em? Does Jugglez carry them?
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Old November 4th, 2011, 08:34   #7
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I cannot believe you guys are recommending such soft rubbers for higher fps setups. Guarders clears are garbage, rip easy and you can normally drop a bb right through. No hold. Modify hop up rubbers are great, cheap too. Waiting to try the PDI w hold as well. Saw it a while ago.
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Old November 4th, 2011, 11:59   #8
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My outdoor rifles are in the 370+ fps range. I've had Guarder clear in them for years now without any issue whatsoever - from tearing, wearing out, or holding BBs. My 350 fps custom MP5 has a guarder clear, and that little bastard could be considered a sniper for the range and accuracy it gets. My 400 fps A&K SAW has stupid range and the only non-stock part in it is the Guarder clear rubber. Tens of thousands of rounds have been put through each of my guns, and I've yet to have to replace one of the rubbers. They do take extra care when installing though because they do tear more easily than other rubbers.

Although now I'm curious about those PDI ones. Next time I need to replace one, I'll try one of those out.
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Old November 4th, 2011, 12:37   #9
ILLusion
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I'd recently sold out on all the PDI W-Holds. I originally brought in 38 of them and they sold pretty quick, without hyping them at all.

Trying to get more now


Here's my original sales listing for it:


PDI W-HOLD Chamber Packing
New Design Hop Up Rubber!
  • 2 extruded ring grip portions provide a better fit against the inner barrel for a tighter air seal
  • Double contact points at the bucking for more consistant hop up performance
  • Nitrile rubber construction provides oil resistance, abrasion resistance and excellent tear strength for great durability
  • For AEG barrels
  • Also suitable for AEG-compatible inner barrels when used on PDI-made Chamber Sets for APS-2 / Type 96 / CA M24
  • Can be modified to fit Tokyo Marui M14 AEG and Next Gen. AEGs
    ( Cut off 6mm from muzzle direction for M14; 2mm for Next Gen. AEGs )
Price: $15
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Old November 4th, 2011, 13:50   #10
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Quote:
Originally Posted by ILLusion View Post
I'd recently sold out on all the PDI W-Holds. I originally brought in 38 of them and they sold pretty quick, without hyping them at all.

Trying to get more now


Here's my original sales listing for it:


PDI W-HOLD Chamber Packing
New Design Hop Up Rubber!
  • 2 extruded ring grip portions provide a better fit against the inner barrel for a tighter air seal
  • Double contact points at the bucking for more consistant hop up performance
  • Nitrile rubber construction provides oil resistance, abrasion resistance and excellent tear strength for great durability
  • For AEG barrels
  • Also suitable for AEG-compatible inner barrels when used on PDI-made Chamber Sets for APS-2 / Type 96 / CA M24
  • Can be modified to fit Tokyo Marui M14 AEG and Next Gen. AEGs
    ( Cut off 6mm from muzzle direction for M14; 2mm for Next Gen. AEGs )
Price: $15
Set a couple aside for me when you get them, guaranteed order. I would live to try these.
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Old November 4th, 2011, 14:29   #11
cbourdeau
 
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The KWA hop up rubber in the 2gx AEGs is similar to the PDI W-Hold and works well.
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Old November 4th, 2011, 14:31   #12
ILLusion
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Good to know. I haven't seen any of their modern hop ups lately. Unfortunately, they use a really crap rubber in most of their GBB's that's prone to swelling when exposed to any moderate amount of silicone oil.

The PDI rubber is made of Nitrile, which is a very resilient compound against many chemicals, while being able to maintain high flexibility (unlike Viton).
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Old November 4th, 2011, 22:31   #13
Adamlxlx
 
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^Get more for sure, I would like to try some as well. As far as the guarder clear I guess I just have bad luck. Tried two different guarder clears in 4 different guns yielding the same results, double feeds and just overall bad performance.
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Old November 5th, 2011, 00:38   #14
ILLusion
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I've had Guarder clears work well for me, but their poor durability is a huge turn off for me. I've also found them to be extremely sensitive to different lubricant compositions.

Personally, I just want my guns to work when I need to use them. I don't want to be always worried about a part potentially failing, or a hop up rubber potentially being over swollen from too much silicone oil or whatever the case may be. I don't want to be always checking my rubber to see if it's torn, either (this goes for other activities *outside* of airsoft........)

Yeah, I ditch the cheap Taiwanese/Chinese made rubbers and stick to the trusted brands.
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Old November 5th, 2011, 01:15   #15
kingbudha
 
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i definately want one of these, would it fit in an hk46 JG body
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