MP40

[Sturmmann13]

First off this thred is for tips on fixing, upgrading or improving the AGM and the TOP MP40.

Next, I am thinking about upgrading my AGM MP40 and I wanted to know if you think this will work.

Deep fire full metal spring guide
King Arms Metal Bushings 6mm
Area 1000 cylinder head for Vr. III
HurricanE Aluminum piston
Angel silicone Piston head O-Ring

Do you think that these upgrades will either help or hurt an AGM MP40? Comments are much appreaciated.

[Jager.Drü]

One thing, a MP40 is a SMG which is not accurate weapon.

[binarypunisher]

MP40 snipin'?

[CharleyNovember]

Looks like most of his upgrades are for reliability not increased range and more accurate fire. I personally would not put parts liek taht in until I busted something in the mechbox to begin with.

[biged]

There are very few guns I would put an alluminum piston in.

The extra weight of an alluminum piston increases the likelyhood of breaking the front half of the gearbox off. This is VERY common with V2 gearboxes. V3 gearboxes (A cloned V3 box is in the MP40) is one of the best designs on the market. While strong, the extra weight of an alluminum piston adds alot of force increasing the likelyhood of failure.
Pistons SHOULD be the weak link should a failure occur. Pistons can be cheap $5-$15 which are great for mildly upgraded guns. Replacing a piston is alot easier and cheaper than replacing a gearset or motor.

Boxes that can handle alluminum pistons: CA249 box, G&G M14, ICS 2-piece gearboxes, Mt Hanyes billet box.

I replace stock bushings, gearset, and the spring rite away. I run stock pistons until they puke then replace them with whatever I have hanging around. I like guns that run 330-360 fps they last a long time.

If I'm going to a game that everyone is pushing the 400fps and alot of DM guns (450 fps semi-auto guns). I drop in a PDI190% and a Guarder piston.

///ed///

[Sturmmann13]

Thank you to everybody. Your help is much appreciated

[schmitty]

I completely agree with Biged. Stock TM pistons are cheap and in my experience last just as well as anything else.

The stock gears in the AGM MP-40 are actually pretty good. The guns reliability can be improved by better shimming, metal bushings and replacing the grease. I've never realy understood how a metal spring guide helps anything. I've never heard of a plastic spring guide breaking?

To improve the accuracy I think would require replacing the nozzle, hop up and barrel which will require a little modding. probably best left alone.

Schmitty

[mikkel]

I have actually sseen several broken spring guides. But it was mostly in high power guns with stock (plastic) spring guides. The bearing does help to relieve a lot of stress on the piston.

[TommyGunner]

what about the possibility of simply putting TM Thomspon Internals into an Mp-40, would that work? I know it would most likley require some internal modding but would it be worth the effort?

TommyGunner

[Guinness]

schmitty said:

To improve the accuracy I think would require replacing the nozzle, hop up and barrel which will require a little modding. probably best left alone.

Schmitty

Schmitty,

funny you should mention that- I think they welded the screw that holds my barrel in after they super glued it and applied concrete sealer.

I want to replace the hop, but cant get to it!

[biged]

what about the possibility of simply putting TM Thomspon Internals into an Mp-40, would that work?

The Thompson V6 gearbox has a proprietary gearset. The spur gear is smaller than normal. However, TM made the bearing a oval-shaped which can be flipped to accomodate a normal sized spur gear.
Any TM stock gearset can be installed. However I would suggest an upgraded gearset from systema or prometheus to prevent any failures.

///ed///

[DeB]

And I would suggest to improve the HopUp like Taffy has done.

Guinnes: Take on the dremel!! Come on remove that screw! Have you try to apply the Svitol (in italy is called in this way) it's a very liquid oil that's unlock blocked screw. Sometimes it works, sometimes not but it can be helpful!
Also the oil WD40 is the same.

I have the spring guide broken on the base where are the flaps that get inserted in the GB on my G3 Revenant...

Bye bye!!!

[chill]

Hello guys!
Does anyone of you have an issue with cocking handle? It doesn't stay in either position and easily slides forth and back revealing hop-up unit. Is this only my mp40 issue?
Appreciate your help.

[jaeger]

I am sure someone covered it already (Schmitty I think), but I had the same problem with it sliding back and forth. I simply put a rubberband inside and it now can be cocked and slides back into place. Here is a good YouTube video on it as well (covers a number of other topics too).
www.youtube.com/watch?v=JDc0pG5oXxY

Let me know if you get it/if this helps.

Nick

[TommyGunner]

Is it just me or do there seem to be alot of problems with this gun, dont get me wrong obviously its worth having but it seems like it needs alot of preventative maintenence before its up to its full potential.

TommyGunner

[2nd Bat]

I think alot of people have wanted to fiddle with them (Mostly cosmetic) or have wanted to refine the hop up which is a bit crude compared to say a Marui or have wanted to add power. Right out of the box my two worked great and I have had no porblems with either even after renting them both out at a Winter big game where they got extensive use during a below freezing event.

I'm delighted with mine. I did the bakelight finish on one but other then that I haven't done a thing to them.

[DeB]

quoting 2ndBat, You can play with it "out of the box" but if you want to improve performances you must change something...

It's not bad for a cheap weapon!!!

I love it...

[shellshokt]

Perahps not quite in line with the original topic of this thread, but I have to second 2nd Bat & Deb. My MP40 is on it's third skirmish now, has worked flawlessly, and has drawn a lot of admiring looks from the 'M4 crowd'.
I have fiddled with mine, but purley for cosmetic or authenticity reasons. For example, I have removed the selector switch (the real steel is auto only) I have fitted an elastic band to the bolt to keep it in the closed position, because I wanted to, and using 220 grit sandpaper exposed the edges to give a worn look.
In my opinion it is excellent value for money & great fun.
'shokt

[chill]

jaeger said:

I am sure someone covered it already (Schmitty I think), but I had the same problem with it sliding back and forth. I simply put a rubberband inside and it now can be cocked and slides back into place. Here is a good YouTube video on it as well (covers a number of other topics too).
www.youtube.com/watch?v=JDc0pG5oXxY

Let me know if you get it/if this helps.

Nick

Thanks Nick, just wanted to make sure my MP40 is not faulty. Definitely will need to attach a rubber band. And thanks for the link to video, found it helpful.
Dyakuju druzhe!

[jaeger]

No problem. Let me know if you got my PM Message.