RostokMcSpoons

I'll do the shimming of the inner barrel and do a test shoot, see it it makes any difference... All in the name of science! The stock is giving me the right arsehole. I managed to free up the bolt from it's cross threading. The spring guides in the gearboxes must differ somehow... certainly the stock bolts are different between the two guns, and now thanks to the combination I can't tighten up either bolt on the tanker stick sufficiently to hold it tightly in place. It may just need me to shim it with a large nut, or find a shorter bolt. Or I've lost something!

Thanks chaps, Leo's post on the Airsoft Sniper forum, linked on the previous message, is a good read As for stabilisation... I found this page I've got PTFE tape, so I can try that tomorrow if I get the time. I've got one problem away from the accuracy fettling... When I was rebuilding the 904G, I managed to cross-thread the stock bolt into the spring guide. Currently they're jammed together (there's a plastic bit of the stock that prevents me from getting a good hold on the spring guide to unjam it all, but I should be able to sort that out tomorrow.) The issue did bring forward my plan to replace the 'tanker' stock with something like the 906C so I can use a better spare stock on there... so presumably I need to buy a rear sling plate, and a generic M4 AEG stock tube? Is there anything else?

I'm still a noob when it comes to shimming. So with the 906C gearbox I just swapped the shims around because the sector gear wasn't spinning very easily when it was just the 3 gears inside the shell, and some of the gearbox screws done up. I moved one of the thin shims from the top to the bottom of the sector gear, and it improved. I may have moved another from one gear to another, I can't remember for sure. (I considered it a 'win' anyway!) Yeah, I'm thinking more in terms of how well it hops rather than deviation from the barrel... I've not stabilised the inner barrel - I'll look that up and experiment! Just a small stick 7.4v. Once the spring is back, it's all down to the stored potential energy in that rather than anything electrical, so batteries will (well, should) only affect the RoF. I've not checked the ZCI barrel / hop, I presume the Prommy rubber is purple, as that's the one usually recommended from them. I'll check, I may have a spare yellow ML bucking, or it may be installed in the 904G now - one way or another I'll try it. Good results with ML regardless of whether it was 50 or 60 previously, so happy to stick with 'em! Does inner barrel stabilisation require parts? I thought it might just be a bit of electrical tape to center it in the outer barrel!

@MrTea, I nearly went to Halfords too, as I need a spade connector to resurrect my Classic Army M16. I realised I didn't know if they had the right ones - what size do I need to ask for?

Ah, does that fit in the knock-off versions as well, do you think? I might invest as my "Odd'un" works quite well, but when it's hundreds of BB's + some spare space, it really does make a helluva noise doesn't it?

Double Eagle M906C -- Maple Leaf Macaron 50 (or maybe 60) degree + Omega nub Double Eagle M904G -- Prometheus hop rubber (as fitted by @Speedbird_666 TM AUG High Cycle -- Guarder Clear (as recommended by @Asomodai, iirc) Tippmann M4 -- G&G Green (as recommended by another Tippmann user + Will @ Spec Ops) The stock nub on the DE was quite soft, I think, Omega is quite a bit harder, but the stock hop unit + Omega + my technical wizardry meant eventually there was always some hop applied, even if I tried to dial it all out. Might have been a function of the odd hop arm supplied in the 906C I've just swapped the 906C and 904G barrels and hops over though, in preparation for using the 906C on the next game day, will be interesting to see how it works! (I'll take the other along too, if I want to swap back!)

My recent travails with my otherwise beloved Double Eagle have indicated a failing Falcon Fire Control Unit (it's a decent MOSFET with some active braking + burst modes etc) To combat this I firstly bought a 904G (because it's exactly the same internals) as the Falcon units aren't available as spares. And then I bought a Falcon unit as one became available! This has allowed me to fix my DE M906C (yay! but it's still needing some work, more on that later) And I have a fully working DE M904G with a better barrel and hop combo installed. Time to "science the shit out of it" and see which is better! Now the 906C is not stock. It has had the super-easy upgrade of the Maple Leaf 50deg Macaron bucking, paired with an Omega nub fitted. When I tested this on installation, I didn't find much difference, but the guns shoots very accurately and consistently to decent distances. The 904G has had a ZCI tight-bore inner barrel and ZCI rotary hop fitted. Both things are widely recommended on these forums. A Prometheus hop rubber has also been fitted. How can we tell which is better? I set them both up with my Visionking 1.25-5x scope, set it at 5x, roughly zeroed and then grouped 20 shots. (Apologies for mislabelling the 906C target) Pretty much sod-all difference! If anything the 906C is better, as the 904G had a tendency to throw a couple of real flyers into the mix during zeroing. A couple of minor observations: 1) The 904G has been well shimmed, sounds pretty good. The 906C has still got the factory shimming and sounds like an asthmatic ant with some heavy shopping in comparison, though there seems to be no loose movement in the gears. 2) Both are running the stock grey motor (Chaoli? (sp???)). The 904G runs warm after spamming semi, the 906C still tends towards "frying tonight" even with the new control unit running things. More backing for the idea it's badly shimmed? 3) The 904G is chrono-ing at 280fps with 0.28s and no hop, which is decent. The 906C was at a little less (there's always some hop applied, thanks to the nub) Perhaps the 906C is too tightly shimmed? Better too loose than too tight ... in this context I've tried different motor heights, but the better it sounds the faster it heats up. Anyway, I think I'm going to swap the 904G gearbox into the 906C and then maybe to do some more 'science' with different combos of barrel and hop unit... but I suspect the difference in their abilities will only show up at much longer ranges than the 15m I've tested at so far. Edit: I swapped around some shims on the 906C, and put it in the 904G receiver, and vice versa. The 806C original gearbox now sounds better, and the 904G gearbox in the 906C receiver now sounds worse Maybe the polymer receiver deadens the sound better than the metal one...? And maybe the motor height needs some more work - @Speedbird_666 your clever shim I don't think is needed with the 906C, it has a different, noticeably longer, pistol grip.

The picture in the first post isn't showing for me, but I think it'll look the same as the Walther 30mm red dot I have. It looks too chunky when it's on the gun, makes it look a little top-heavy, so it's the sight that gets the least use. Would look good on an LMG though, I guess. If you want a decent and very cheap sight, the 'Battlefield 4 Coyote' sight is super cheap and really rather good, it's my preferred light weight sight. KINGSCOPE Red Dot Scope 4 Reticles Reflex Sight for Hunting Airsoft Shooting with 20/22mm Weaver Picatinny Rail Mount https://amzn.eu/d/axbGrDd Another vote for the Sotac if you want the Eotech sight, looks very good on most guns, especially the HK416 Here are the two sights on my Scarab Note that they've both got Red Dot Engineering sight protectors fitted (so the Eotech looks squared-off) Those protectors are widely recommended at about £10-12. Available on eBay.

Warhead have worked perfectly for me, I bought 10kg of 0.28s, nearly got through all them now without any getting jammed in the barrel

Double Eagle springs might be made out of Kraft Dairy Slices, they seem to go all the over place in fairly short order, but my other guns have held up quite well over time. It's the ultimate 'YMMV' story. So buying gats with quick change springs makes a lot of sense ?

Looks like TM are running scared of Double Eagle's Noveske GBBR * and have come up with a handsome counter to it * I think I'm joking

Thanks @Keldon, useful info Hey @Cannonfodder, @Dan Robinson I might go along too, see you there perhaps

It's all there for a reason! (Well, mostly) My plastic bin has quite a few holes in it, for ... "reasons"

I had a cunning thought based on the word 'needle' - I found a thick needle and pushed / hammered it into the external valve hole - and it gripped enough to let me spin it with no effort whatsoever Yay!

I had a leaky gas mag on my VFC HK416 during the last skirmish day, I've finally got around to taking a look at it. And wish I hadn't, I've made matters worse The leak appeared to be from the fill valve, so I did what any normal bloke would do... I tightened it. The leak got worse so I tightened it some more - and then it failed. Looks like I've sheared it through the thread.. Which means (I guess) half the valve is now in the body of the mag and I'll need to extract it somehow. Any hints? (Or is it going to be easy and I shouldn't be asking dumb questions?) Should I go with one of these: https://www.fire-support.co.uk/product/guarder-magazine-gas-injection-valve-pack-of-two-for-kjwevfc as a good replacement? Edit: I took the mag apart as I realised that I needed to get some silicone grease on the o-rings and gaskets so they wouldn't irreparably dry out, so they're now stored in plastic bags ready for when the new fill valve is here. This meant I could see what the fill valve looks like from inside the mag: Sorry for the shit focus. The gouge marks on the barrel of the valve are my first attempts to undo from inside with a pair of needle-nose pliers. I can see it's moving, but the tiny room I have to work in means I can shift it about a twentieth of a turn at a time. This will be painfully slow work! I might pop out and buy some more svelte pliers in the hope I can turn it a bit more on each go, but really I need a more cunning method of unwinding it!

Ahhhh, is that the secret to making it work better? To be fair it usually does make a decent edge on the flat and smooth parts, it's where it gets tricky on stippled surfaces or transitions in geometry that it sometimes fails. Anyway, I've got the vinyl mask on the way soon, so whatever gets painted next will be done with that

I'm still carrying the hit marks from an HPA M4 pistol build that got me on Sunday Don't do that ??

Haha I've just bought a 904g as a donor gun (spending more money than I'd liked in the process)... If only you could have made the offer a week ago ??? Well, I'm still interested, the 904g can be a full spare gun rather than just a shell sitting in my loft, so please pm me with prices. Please just bear in mind I'm a jobless hobo at the moment ?

There's money to be made there! I downloaded it to take a look (and then did sod-all with it, tbf)

I'll take the AeroPro (happy to do F&F if you are), just let me know the p&p cost and ping me your paypal details PS Thanks for making me feel slightly better about the mess on my desk

What constitutes a sensible offer? ☺️ Yeah if you'd posted this a couple of weeks ago, you'd have got a sale regardless...

Me? Yeah, well I'm still 'between contracts' so essentially skint when it comes to 'luxury purchases'. Given I can run my VFC 416 to scratch my GBBR itch, then 'luxury' is what it comes down to. (Plus the Spec Ops CQB site still hasn't opened, so the need for a teeny-tiny not-a-pistol isn't really there yet) I'm currently playing quite a lot of Battlefield 2042 where the MP9 is a nice gun to use - if that becomes an influence, well, I'd want an actual MP9

New review of this little gat... It definitely does look nicer with a foregrip attached...

Changing the hop rubber and nub was the first 'tech' I did in airsoft that didn't break my gun ? It's very easy, but we can walk you through it if you need help or just confirmation you're doing it right I have the Maple Leaf Macaron 50deg and Omega nub in place in mine, and they do a great job... The gun shoots accurately and lifts 0.32s (the heaviest I've tried) to a decent distance ... estimating 50-60m?. I've just bought Speedbird's 904g as a donor for my 906c which has a failing Falcon unit. He put in the zci barrel and hop unit, so I'll be able to do a small test to see whether that provides a noticeable improvement over my stock barrel and hop. (I did an accuracy test comparison of the ML + Omega against the stock rubber and nub, and to be honest didn't notice any great difference... But then I was only shooting at ~15m which didn't give it the chance to show the improvement in range. It'll be interesting to see if I can detect a difference with the better barrel at the short range, or I need to get it out on the field - though it will then come down to subjective 'feel' rather than objective empirical measurement of grouping)