30 replies to this topic

[Crimson]

G&G have a new range of blowback AEGs, details and pictures are below, its 100% Made in Taiwan, so no ACM parts or labour:) :

True to the faith of mimicking real firearms ,Top Tech is proud to present its new Pneumatic Blow Back system to its line of airsoft guns. Conventinal airsoft blowback utilizes tow hook springs to mimic real bolt actions, which often lead to excess wear and tear poor reliability in the gear box.
To alleviate the problem of conventional systems, Top Tech has independently developed the Pneumatic Blow Back system; a piston driven, gas operated mechanism to better mimic real life bolt actions. This new technique utilizes compressed air to move the bolt, which enables the action without adding extra stress to the gearbox. This class leading system represents a significant milestone in the airsoft industry.

1. Copper cylinder head
Top Tech gearbox uses CNC processed copper cylinder head. It reduces the change in air density which decreases the energy that is often caused by the wear and tear occurs with the traditional cylinder heads after a long period of use.
2. Steel Spur Gear
The spur gear in Top Tech gearbox is manufactured by cutting from steel sheet using CNC machines. The durability and hardness are enhanced and the potential damages from operations are minimized!
3. High electric conduction silver-plated wire set
Top Tech gearbox uses the silver-plated wire sets which are highly efficient in electric conduction that minimizes the chances of the batteries from running down and maximizes the battery's effectiveness and durability, which also achieves the aspect of environmental protection.
4. 8mm ball bearing
Top Tech uses 8mm ball bearing in its entire range of products to stabilize the gears' rotations and enhances the strength in bearing.
5.CNC AL6061 Piston Head
Top Tech uses the CNC AL6061 AEG aluminum piston head. The aluminum piston head increases the durability and strength compared to the ordinary plastic versions.
6. Steel selector plate
MIM steel selector plate is used in the entire range of Top Tech products which increases the durability than the ordinary selector plates.

Source: G&G Website
http://b2b.guay2.com/

[GoLgO 13]

wow that looks great. Any price given for these yet?

[Jin15]

Must... have... blowback MP5 A4... must... fit... with... Surefire forend

*Drools all over himself babbling inanely in awe of the magical jiggly bolt*

[Chris North]

Very cool.

This is the same system that was reported a few months ago, yes? Glad to see it's not being used in an M4 or M16.

Apparently so: http://www.arniesairsoft.co.uk/forums/inde...c=152243&hl

I also posted in that thread and they did stick the system in an M4 first.

Edited by Chris North, 05 January 2009 - 07:24 PM.

[bitchtits]

i know this is different being in an mp5, but having fired the toptech m4 the blow back sucks balls big time,theres no kick, just the noise of the cover flying back and forth.
the only plus point is that g&g seemed to have finaly made guns that work reliably,and preform well

[ianhaz]

Yess they made an SD6

[TDS]

i know this is different being in an mp5, but having fired the toptech m4 the blow back sucks balls big time,theres no kick, just the noise of the cover flying back and forth.
the only plus point is that g&g seemed to have finaly made guns that work reliably,and preform well

Thats the idea, its a cool effect and its designed to give no reliability problems.

If you want something that blows back and breaks constantly buy an escort.

[Pilko]

Yess they made an SD6

Indeed

Who are the main UK retailer for G&G nowadays?

[M0ldyM!LK]

Mmmmm.... SD6 = mine.

Depending on the price point, I may just end up going with the non-blowback offering they announced for Shot Show

[MDK_Marshal]

Shame that they decided to pre-emptivley ruin the gearbox by sticking a aluminium piston head in a V2 box.

When you add in the fact that these will likely need an M120 or so to run at 330 fps (air will be needed to drive the bolt, which results in less used to fire the BB, giving less muzzle energy for a given spring than a regular AEG), you've got a broken gearbox very quickly with that.

I really don't see why ANYONE makes aluminium piston heads - they serve no purpose whatsoever, apart form making money from people that think they're usefull....

Apart form all that, looks interesting! Hopefully stuff like this will make blowback AEG's more proliferate - good to see that people are working on the tech, at least

[Abelius]

Those cylinder top frames are like 3mm thick, as it seems from the pictures. Wonder how many shots they take with aluminum piston heads to crack?

[meppie]

I really don't see why ANYONE makes aluminium piston heads - they serve no purpose whatsoever, apart form making money from people that think they're usefull....

There are a lot of high performance cars on the road which have an aluminium engine. It really the depends on the kind of aluminium they have used. It might actually be a good quality piston head even thought it is aluminium.

Due to the power the blowback needs I do wonder what spring is standard installed within the gearbox and which spring you would need to get something like 345fps.

[L4byr1nth]

Surely they know we all expect it to be low-powered because of the drag from the blowback mech? I'd be surprised if they let it leave the factory shooting less than 310FPS.

Ben.

[MDK_Marshal]

There are a lot of high performance cars on the road which have an aluminium engine. It really the depends on the kind of aluminium they have used. It might actually be a good quality piston head even thought it is aluminium.

Due to the power the blowback needs I do wonder what spring is standard installed within the gearbox and which spring you would need to get something like 345fps.

Heh, you're kind of missing the point here... It's not a case of aluminium being worse than, say, polycarb or POM, because it's not. It's just that an aluminium piston head is heavier and is less elastic, meaning it has more kinetic energy when a given fps is being produced, and will transfer a larger proportion of that to the cylinder head, and as such, the gearbox casing, when the piston returns forward.

The added strains will break the front of a V2 gearbox faster than polycarb.

[meppie]

Indeed I missed that point. My bad.
So in this case it would mean you would change the piston ASAP?
What piston would you prefer?

[Horsem4n]

seance when did we find out that there was an FPS loss from the pneumatic system? did someone say that in one of the M4 reviews?

[Utty]

Top Tech SD6: yet another one for the wish list.

Also, the length of the blowback stroke is much better suited to represent the blowback of an automatic 9mm mechanism, compared to a rifle cartridge mechanism.

[darthrebelpenguin]

There really isn't any loss of FPS from the blowback mech. Every one I've seen chrono's about the same (+/-5) regardless of weather the blowback is on or off.

[MDK_Marshal]

Hmm, fair enough... Would have assumed it'd need a fair whack of air to move the bolt...

And meppie: Just the piston head, rest of the piston is fine by me I've no real preference as to the piston head, just anything polycarb!

[my_plague_666]

i wonder if this tech will be moving to V3 any time soon. if they started releasing the GBs alone i reckon they would make a fair bit of money.

anyhoo, woo! reliable (seemingly at least) blowback! sadly no TM style recoil engine, but its better than nothing. at least the metal-on-metal rattle will drown out the mechbox noise.