DerDer

Thing is very sturdy when its attached to the barrel. Tried a few different hop up rubbers for fit. A Lonex didn't stand a chance of getting in. Then went to a Prometheus purple which barely fit and tore near the barrel end. Moment of dread trying to get it out but it eventually came back out. Might have fit if I had trimmed off a mm or so. Lastly tried out a G&G green which fitted snugly but well. Still waiting on other parts before I can reassemble it the build but first impressions are promising.

Picked up a new hop up unit. Thing is fairly robust, beats the Lonex and Retro Arms for build quality.

All the more reason we need a HK 21 aeg, close to optimum barrel length.

A while back remember reading that it was beyond 509mm that negative effects kick it. That was a US based forum, so that might have been with the mindset of dropping a M120 spring in everything. The 455mm makes more sense. Thanks for the info.

A while ago 455mm was being thrown around as the optimum barrel length. Now it might have its origins in sniper forums or a particular TM model was similar length and had great performance.

Absolutely, there is no substitute for testing specific guns with BBs. Have had an AK it the past that was shooting very nicely with 0.28g BBs. Tried the 0.30g of the same brand and was a horror show. Choking and did a number on the hop up rubber. GBBR versus AEG introduces another variable.

Mandatory PFTE tape mention.

That's interesting. Was going to try those BBs when they came into stock at Fire support, glad I didn't now. Find the G&G BBs good for lighter weights (0.25 & 0.28g). Used Geoffs at a couple of different weight and been pleased with them. Most recently got a few bags of Airsoft Surgeon 0.30g and seem decent enough in backyard testing. Will have to use them in a skirmish or two to get the full experience.

Not that particular aeg, still see there are 1000 quid and plus aegs where their is an extra charge for changing the connector. Seems a bit stingy all the same. Also as mentioned by others, quite a few of the recommended upgrades seem to be err let's charitably say lateral in their effectiveness.

Don't forget the best of a fiver's charge if you want a Deans connector put on your custom aeg.

If you're handy with a file or dremel, you can mod a surplus handgrip to fit fairly easily.

Good to hear you have had positive experience with the Valkyrie. Found G&G very decent at lighter weight (0.25 & 0.28g), had a few jams with their grey 0.30g. Found Geoffs to be reliable feeders at the various weights I have tried (most recently 0.32g). Have a few bags of Airsoft Surgeon in 0.30g weight on the way, will be curious as to how they perform. Haven't tried the brand before.

Makes it even more unpleasant when you tear one.

Fair point. Remember a friend being horrified by what airsofters spend on bits of rubber (hop ups).

Some beefed up tappet plate springs. Seem to have resolved my feeding issues on 0.30 and 0.32g ammo. Always handy to have spares. https://www.kingdomofairsoft.com/product-page/koa-150-tappet-plate-spring

A few companies seems to advertise low profile bushings. Might be worth a go? It's very frustrating to repeatedly take apart and assemble a gearbox, if the screeching is caused by wonky bearings rather than one's own shimming.

It improves it somewhat with the Titan, as others referenced, not to the same extent. With the Perun it could also make it more pleasant, although with less micro tweaking. It should be said that Perun have a newer V3 ETU due this year. If you go to their website the V3 optical is on the discontinued section, so they should have something new in the works.

The Titan is a good call. Used to have the occasional sensor grease issue, have managed to figure out an appropriate level of lube. Eliminating cut off lever/ trigger block problems is ace. Also have one in a Galil and it frees up battery space. Will be curious as to how the Aster V3 is received. Also the Jefftron V3 leviathan should be out in the next month or two. Looks interesting.

Gate Titan V3?

Nice looking kit. Reminds me of early era CIA in Afghanistan.

Stoke tomato ketchup is well worth a try.

It's a lovely gun. Have the fixed stock 7.62 version myself. About the only external misgivings I have were the incorrect rear sight and short cleaning rod. It's easy to source fix parts mind you.

A decent UZI has to eventually materialize.

That FAL is lovely. 2021 is the year I get a folding stock one.

A Lambda 6.05 barrel. Giving the brand a go. Have used PDI and Prometheus in the past. The former can be very picky with rubbers and general hop up arrangements.