WE HK416 Hop up Defective?

[Kingpin665]

Hey ppl, I was just messing around with my gun trying to get the hop up to stop over hopping the BBs into the sky as no matter how far one way or the other I turned the adjustment screw it was always to much hop. So I dismantled the rifle and noticed that even when fully off it seems to be pretty deep into the barrel so I decided to shave some girth off the piece that directly presses onto the rubber sleeve on the inner barrel and that dropped the pressure down enough that the hop up is now adjustable.

However, when trying to fine tune the adjustment I noticed that there was an imbalance in the hop up when looking threw the barrel. Which is what I'm attributing the GARBAGE accuracy to, as some shots are perfect with the hop up set where it seems to need to be and then probably more than half the shots will drop hard like the hop up is having zero effect or even spread wildly to the left or right. I was doing the accuracy test into my backyard from inside the house so no one could see the gun and to increase the distance for the test, but I was still only shooting 60-75 feet. So I took it apart again for a closer look at the hop up and discovered this (See pic below) what seems to be a small air bubble/pocket/imperfection in the casting process and I'm thinking there is no way that's suppose to be like this... and I just want confirmation on that before I order a new rubber.

Correct me if I'm wrong, but what I'm looking at as a replacement is http://www.airsoftparts.ca/store2/in...oducts_id=2347

I was also thinking of getting an RA Tech 6.01 tight bore barrel to help increase the accuracy in case the hop up was only part of the innacuracy issue, it being a GBBR being the other or something. Just curious if there are any opinions on this as well. I am going to continue my research as I wait for a response from the community, I'm not the lazy guy wanting to be spoon fed all the answers... I am trying.

[MaybeStopCalling]

1. The stock WE hopup rubber is a piece of trash
2. I got the Ra-Tech rubber, and had the issue where regardless of how dialed in my hopup was, the bbs would roll out of the barrel
3. Modify VSR rubbers are the best option in my opinion

[unknownvariable]

Did you add silicone to your propane? If any lube gets into your barrel or hopup then that will make your shots inconsistent.

Laylax Nine Ball and A Plus Devil rubbers are also around. I use the Nine Ball and have no complaints. I do find the hopup adjustment very sensitive and non linear in effect as you adjust it.

[Kingpin665]

Is this what your talking about? http://www.airsoftparts.ca/store2/in...oducts_id=2264

I have this adapter http://img.redwolfairsoft.com/upload.../MB-XG02-L.jpg so there is always a tiny amount of oil in my mags, but I've not even fired three mags through this gun yet so I don't think that oil is the problem.

[unknownvariable]

He has the ones I was talking about too.

In a previous thread, it was a common recommendation to run with straight propane without any additives.

[Fox62]

Well, the propane vs. GG/lubed propane really depends on the type of mound the bucking has. For standard mounds (like that of the stock bucking, Modify Bucking, NineBall), the oil doesn't have such a dramatic effect, and will require slightly more hopping, but that's it, it'll shoot very similar, and lube your mags and gun. On the other hand, buckings with H or V shapes (Firefly, Falcon, PDI W Hold) will be heavily affected by the oil, and probably require the hop to be at almost max., and even then won't have the greatest effect. No doubt propane is the best option, but on standard mounds GG is VERY gameable, offering all the advantages of oiled gas.

I second the poster on Modify buckings, cost half what the NineBall costs and works better, is built better, and has better seal. All the buckings with the exotic mounds really don't work very well.


Fox.