Mechbox Review - Lonex drop-in mechbox

[lurkingknight]

anything coming into stock for v2 cutoff levers?

[Stealth]

2 Things:

1) Wrong thread brah.
2) You mean these bad boys?

[lurkingknight]

I should not post when I'm half asleep lol.

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nooope.

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[Rabbit]

I'm having a helluva time trying to get my Lonex box to fit in my G&P - no idea how you did it Stealth lol.

I can't get the rear body pin to line up along with the one slipping through just behind the trigger.

Edit: G&P used some kind of rubber padding on the ass end of the lower receiver which I never noticed - it was stopping pins from going in by a fracture of a mm - fits like a glove once its removed!

[Stealth]

Trigger pin first. Then body pin. Then pistol grip and buffer tube.

[Stealth]

Originally Posted by Rabbit

Edit: G&P used some kind of rubber padding on the ass end of the lower receiver which I never noticed - it was stopping pins from going in by a fracture of a mm - fits like a glove once its removed!

Oh yeah, some G&P receivers have that, not sure why. I surmise they realized that a batch of their mechboxes were off-spec and they had to compensate.

King Arms does something similar to their receivers - note the small casting addition to the front lower part of the upper receiver to push the hop-up unit against the mechbox.

[Zack The Ripper]

Love Lonex, and so does my M4. Just saw this review, good detail; you are the airsoft AEG guru around here Stealth, the info is much appreciated.

[SixthFall]

really liking my new mechbox, is it just me or do they come with the red piston now? Although, it is supposed to have a 120 spring in it, its only shoting like 390fps on a 416 CQB. I suspect that either a m100 spring was put in by mistake when my sorbo was installed, or i have some airseal issues somewhere. Oh well

[cetane]

M120 could be in that range. I have a a&k masada bone stock with a promiethius m120 that is in the low 380's (what ehobbyasia installed for export)

[Stealth]

I would love to say that if you run out and buy an M120 spring, you'll get 400fps bang-on, but such is not the case.

There could be any number of factors:
* Bore diameter
* Nozzle to hop-up sleeve air seal
* Air seal around the sleeve and barrel
* Piston O-ring seal
* Nozzle O-ring seal

Add on top of the fact that not all springs are identical and you'll start to see where the source of inconsistency / error margin.

[Rabbit]

Sorbos along with AOE correction lower the fps as well - I only use m120s now because they usually produce 390fps with a good airseal.

I'd actually like to see the inside of someones lonex box from when this thread first started - it would be interesting to see what has held up over time

[pestobanana]

@Rabbit Sorbos shouldn't lower your FPS noticeably. I've never noticed a difference in FPS after installing one.
390 FPS with a M120 means you have a poor air seal. I've never noticed more than a 10 fps deviation between spring brands I've used.
I'm getting 395 fps with a Modify S100 spring in my G36. In my M14 I'm getting 455 fps with a MadBull M120.

@Cetane A&K Masada's come stock with almost no air seal at all. I've worked on two of them in the past week. M120 should be netting you at least 420-430 fps with a decent air seal.

[Stealth]

Uhhhh... I'm going to venture to say they're horribly mis-labelled.

Can you imagine people running out to buy an M120 to get a field-legal gun and get 455fps? Well at least you got a high-power spring on the cheap! LOL.

[lurkingknight]

depending on your cylinder type and barrel combo, you could jump that threshold of being properly volumed to under volumed. I had to switch cylinder types in one gun to get fps back from a sorbo install.

[Stealth]

I've always wanted to build an energy creep gun, especially since we have those Bioshot .32s readily available now...

Lurking: how thick of a pad did you use? I've been sticking with 3/16" plus a 1/32" neopad and haven't messed up voluming yet.

John