What gearbox shells are decent these days ?

[Nuro]

So way back when, we only had a few options for gearbox types.

I use to buy a standard v2 re-enforced gearbox that would last. I mean they really lasted, 20years kinds of lasted.

However, 20yrs is long enough and i new need replacements due to cracks and breaks appearing.

So, what is a decent replacement.

I am seeing alot qr/qd shells but alot seem to be "E&C",

Are these any good ?

It doesnt have to last 20yrs but i would like it to last more than a few shoots before it needs replacing again.

Also seeing alot of pre built boxes but they are almost all m4/m16 with triggers that look so thin i feel if i actually pressed them, they would snap (think Mongo hands for anyone who knows the film ?).

For info,

I run usually a g3 or mp5.

Both upgraded and kicking out 345-350 fps. Parts seem to getting rare as alot of the market is dominated by m4 variants.

Thanks for any advice.

 

[Fatboy40]

If V2, and I had the cash, I'd buy one of these for myself...

https://www.ak2m4.co.uk/internal-parts/gearbox-shells/xt-cnc-v2-split-gearbox-shell

... as they're back in stock (but now they're back in stock I'm brassic).

 

[Lozart]

E&C shells are very good. I have one in my Specna SA-A03 (because it came with it), one I built from the ground up in my MK12 DMR and another in a Salient GRY copy that I'm building (came as a complete gearbox).

 

[Spencer6277]

If your running an MP5 I'd get the Systema Revoultion gearbox casing. Absolute tanks 

I've currently got one in a TM mp5 from like 20 years ago running at 34rps ssg. 

 

[Nuro]

Thanks for responces, will check them out.