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Upgrades for Lm4


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#1 matan91

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Posted 14 June 2014 - 11:31 PM

Hi everyone,
I have just got my new lm4 and I want to upgrade it.
With upgrades are available (especially good inner barrel for high accuracy and range)
And how I can fix the double feeding? This is new gun but it gets stuck too many times because double feeding

#2 PJ-P09

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Posted 15 June 2014 - 10:09 AM

There are 2 ways to upgrade your lm4, modding the internals or replacing oem parts by enhanced ones.
Recomended mods:
->Boobiegbb PowerStroke Mod -> Link Link2
->Boobiegbb Nozzle plug Mod -> Link
->Dobey mod to improve smoothness in the back-travelling of the nozzle into te bolt carrier. -> Link
->Boobiegbb hammer mod for quicker trigger response -> Link Link2
->Boobiegbb Double feed Mod: Link instead of the mod proposed by him, which was dremelling the barrel to put a o-ring to prevent the hop from moving, i just put some adhesive tape to make the step enough to keep it in place; it works perfect and don't need to modify the barrel.
Enhanced parts:
->ESD EVO II Hop Up Tensioner Set & MapleLeaf bucking-> Link
->ESD EVO II Hop Up Housing-> Link
->RaTech 6.01 inner Barrel -> Link
->RaTech blue 70º bucking -> Link
->Guarder black bucking -> Link

ALERT!
Be sure you have the USA version or the KSC version2 hopup, the hopup, bucking and barrel are different from KSC version1.
Version1 are those who have the ball bearing system
Posted Image
Version2 are those who have the tensioner arm system
Posted Image
I have the version1 but i replaced everything so now is running version2 hopup, with RaTech barrel, and original KWA-USA bucking and hopup housing.
If you have the version1 and buy the version2 barrel it won't fit into the chamber and is the same at the other way, if you buy the version2 hopup but you have the version1 barrel it won't work.

Edited by PJ-P09, 15 June 2014 - 10:13 AM.


#3 matan91

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Posted 15 June 2014 - 12:24 PM

Actually I have the Asian version. I'm not from usa

#4 PJ-P09

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Posted 16 June 2014 - 07:35 AM

As i said there are 2 versions of the asian lm4, the bearing and the "revision" with the tensioner, before buying anything disassembly the gun and check which one you have; if its made after 2013 it probably have the new version hopup.

#5 BeachEMT

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Posted 17 June 2014 - 08:11 AM

Sorry PJ, but I'm going to have to make some corrections. Besides a few minor details, it's a nice list that consolidates a low of good info.

 PJ-P09, on 15 June 2014 - 10:09 AM, said:

Recomended mods:
->Boobie's power stroke mod -> Link Link2
->Boobie's nozzle plug mod -> Link
->Dobey's mod to improve the smoothness of travel of the nozzle in the bolt carrier. -> Link
->Boobie's hammer mod for quicker trigger response -> Link Link2
->Boobie's double feed mod: Link instead of the mod proposed by him, which was dremelling the barrel to put a o-ring to prevent the hop from moving, i just put some adhesive tape to make the step enough to keep it in place; it works perfect and don't need to modify the barrel. DO NOT USE any kind of tape. I believe the reason is discussed in the mod thread. The short explanation is that the tape with degrade and could cause more damage.

Enhanced parts:
->ESD EVO II Hop Up Tensioner Set & MapleLeaf bucking-> Link
->ESD EVO II Hop Up Housing-> Link
->RaTech 6.01 Inner Barrel Complete Set-> http://www.airsoftta...oods.php?id=657
->RaTech blue 70º bucking -> Link
->Guarder black bucking -> Link
The "strike through"s are unnecessary. Between the RAT barrel assembly and ESD EVO II, you have all the best part currently available for the LM4 (and KSC M4). That combination will also make sure there are no compatibility issues.


#6 PJ-P09

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Posted 19 June 2014 - 03:50 AM

Yes you're right, there are parts that are unnecessary but I listed other bucking brands and parts just for information, i have the rat barrel and yesterday bought the esd set, i'll run it inside the kwa stock housing.
I didn't list the RaTech complet barrel set because the housing and the bucking that cames with it are very similar to kwa stock parts, i think that's a waste of money. But if you have the housing broken it's a good choice.

I didn't want to "dremelize" the barrel, that's why i used some tape, it works perfect and stays in place, this is how i made it:
Posted Image

The tape is not over the brass piece is behind it, it keeps it in place preventing the barrel form moving and causing double feeding.
After 5 games still working perfecly.


A part of this, do you know how to install anti rotation links? i would like to install KNS Gen2 just to make the lm4 more sexy but don't know how to do it.




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