Airsoft Forums UK

AUG, FAL and FAMAS, seems like you have great taste in gnus to me, not weird at all

All of the plastic hops i've used in augs have been good. CNC ones however are not as friendly. You have to spend a little more time with them to get them right, and that time doesn't translate into the hop working any better than the basic plastic ones. I have never played with the lonex/ASG ultimate metal units, so they may or may not be good.

If you put new screws in to retain the hop unit then just make sure the hop has full spring movement forwards and backwards. It's the tension of that spring that helps lock the body take-down pin by putting a little side load on the pin. It also removes some of the upper/lower wobble. And in addition to that if you set it so the barrel is locked then you will have feeding issues, it also means you can't shim an aug barrel to the outer barrel (augs actually have 3 barrels inner, outer, and a thin aluminium sleeve) The inner needs to move freely, and provided the barrel and hop are springy then you should be golden. Some after market inner barrels can be too thick for the AUG and cause this problem, So it's a critical part of the build to make sure the hop is free.

Also watch out for the brass spacer ring that sits in the front part of the hop. They can interfere with the screws and reduce the spring travel distance. Personally I cut the hop rubber down and put the ring inside of the C-clip area, Leaving everything forward of the c-clip open.



£6 for a plastic replacement.
https://www.gearofwar.co.uk/product/jg-aug-hop-unit/


 

Thank you. Genuinely.

I took it out yesterday to my local Airsoft range and had a shoot. Feeding issues straight away ?.

Knew it wasn't going to play nicely but you have to try these things. ?

Thanks for the link. On its way to me now. 233fps is a bit meh, so I think it's got air sealing issues. Might strip the box and see what's going on in there. ?

Sort the hop unit before you strip the gearbox. Chances are it'll want a hop rubber as well. I tend to stick with mounded types, and either g&g green, or prommy purples. I've never used a maple leaf in an aug.

Air nozzles on the gearbox are an absolute pain in the ass. The ASG ultimate/Lonex one is the one I tend to go for if you need a new one. Avoid pretty much everything else especially the metal ones they tend to be the wrong length even if branded for the AUG. I think a lot are G36 nozzles and the AUG one has a slightly different spec.

The rest of the gearbox is bullet proof. AK front contacts, and a easy to service rear contact for auto. Mostfet install can be done with the gearbox closed. They benefit from silent piston/cylinder heads as it makes them quieter to shoot (slightly). Motors are on a cage, TM gears are cheese so if you upgrade the FPS past 300 just be aware the gears are not going to last.

There is also a plastic spacer that sits on the back of the hop. This needs to be on. Without it the hop won't sit in the correct place. As the hop/Gearbox alignment is done on that hop spring pushing the spacer onto the gearbox, So the hop/Gearbox is always touching. When you assemble the upper to the lower, if you are gentle you should be able to slightly feel the hop spring moving and pushing the upper off the gearbox in the last 3-5mm of body lockup.

Awesome.

I'd heard that TM gears were a bit soft.

It looks like there's an aftermarket hop rubber in there already (creamy yellow colour-possibly a maple leaf) so I'll clean it up and see if it's worthy. Failing that I'll go for your suggestions. The hop doesn't have much spring in it so I wonder if the issue is the barrel not floating.

MOSFET is on the list of things to do, but a way off yet.?

Thanks again. You are a star

Just been digging around in there and found the hop rubber lips were just a smidge too long. Trimmed the bottom where the feed is by a smidge and boom. Every shot. The odd double feed but hey, it's a start! ?