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My Lm4 Initial Impressions And Skirmish Report **updated 22May**

KWA LM4 review airsoft gbb gbbr

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#1 dino325

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Posted 17 May 2012 - 07:20 PM

Hey guys,
I just received my KWA LM4 in from Airsoft GI yesterday so I figured I’d post up my initial thoughts for those who might be considering it as a purchase.

First off let me say that this is my first GBBr and I have never owned a KWA although I've heard good things mostly and have upgraded quite a few for friends. Having never owned their product before, I entered into this purchase completely unbiased. This review will be updated periodically as the LM4 is fielded and get a place to test range, durability, and longevity.

Side by Side with Systema M733-


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KWA has a slightly darker shade of grey but both guns look great. Nothing to complain about here.

**Exterior**
I do wish that KWA had gone with a stamped body and worked to get trademarks from Colt perhaps on the receiver but it's still a gorgeous gun. Upper receiver is a of two piece construction and joined at the top by the rail. It seems pretty well reinforced as the delta ring attaches like real steel as well keeping the receiver together that much better. Only seam that can be noticed is along the front of the upper receiver where it meets the delta ring. I didn't have my M16 multi-tool handy, but through the parts diagram and talking with KWA reps, the outer and inner barrels are identical to the KSC version of this gun allowing us to swap parts fairly easy as more become available.

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**Interior**
The lower receiver is one piece and the buffer tube is screwed into the receiver like the real steel. LM4 does not come with Knights Armament RIS or Command Arms stock, however it shows that LM4 can take real steel parts.

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Buffer tube spring

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Pistol grip should be able to accept real steel accessories as well but some slight modding might be required. Need confirmation here...

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Bolt carrier group is metal which is nice. According to Airsoft GI's comparison video, the air nozzle and various other parts in the bolt assembly have been changed and reinforced vs. the KSC non-ATF approved Asian version. Good news ;-)

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Hop-up adjustment is made through the ejection port by turning the small dial with included tool. Something that may catch some off guard initially is the hop-up construction. When I first looked over the gun, I glanced at the hop-up which revealed a bucked which appeared torn down the middle. After contacting Airsoft GI is was confirmed that this is in fact the 2GX hop-up system which is designed with two separate nubs. Melt-down averted hah.

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**Magazines**
Magazine construction is spot on as well. The top inch is polymer and replaceable as one piece should it fall and break. It seems that the construction is very durable, however time will tell. Magazines hold approx. 40 rounds and I was able to get 80 rounds through one fill.

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(KWA left, Systema right)

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(Systema left, KWA right)

**Operation**
Recoil is surprisingly strong. Much more than I had expected. I used King Arms green gas exclusively during my testing. Just like the real steel, if the hammer is de-cocked  in safe or semi, the safety will not move to safe until the hammer is cocked back. ASGI chrono'ed the gun prior to shipping at 370 FPS. KWA advertises 390-400 FPS however after speaking to KWA reps this is now inaccurate as parts have now changed causing a drop in FPS. As is probably known, bolt release and charging handle function as to be expected as well.

**Initial impressions conclusion**
Let me start by saying, this gun fulfills what I was looking for in airsoft when I began playing over 6 years ago. Recoil is crisp and really requires you to shoulder the weapon in order to take accurate shots which I love (No more sitting the stock on top of your shoulder if you except to hit anything). KWA has included every detail to mimic the real operation of the gun to include functionality of the forward assist in seating the bolt fully forward. I really have nothing negative to say about this gun at this point. It has met or exceeded my expectations so much that I'm considering selling my Systema and picking up a LM4C as well when it releases. It really seems as if KWA did their homework on this and although I have no experience with GBBr's prior to this, I feel like this could truly change the game.


UPDATED 22 MAY

**Initial Skirmish Report**

This weekend I was able to get out and use the LM4 for about 4-5 games. Having used a Systema up until the LM4, I'm still becoming accustomed to the magazine capacity however it's a welcome change. From a play and training aspect I enjoy the stressful reloads during firefights. During play I used exclusively green gas and Madbull .28 precision bb's.

Reliability-
The LM4 performed well during my skirmishes. I experienced no double feeds, chopped bb's, or jams at any time. I also didn't notice the bolt failing to lock back completely as some have reported. One huge recommendation I would make to anyone picking up an LM4 is to invest in the valve key which Allizard has mentioned for tightening the release valve. This if nothing else is great preventative maintenance for your gun. EDIT: I put approx 12 magazines through the LM4 during my skirmishes this weekend and magazines were filled to 30 rounds.

Range and Shot Consistency-
The foliage I played on was a little too thick to accurately gauge range on the LM4 but with engagements at about 100-120 feet groupings seemed very consistent. One note here is the hop-up adjustment. While I can truly appreciate the work KWA put into designing the hop-up so what it didn't detract from the overall realistic look of the LM4, the hop-up tool is a pain to get seated into the hop-up teeth. I think that it may just need some break-in time so  I'll keep an eye on this and report back if it get any easier. At close distance, accuracy what dead on with my aimpoint.

Power-
I didn't have a chrono on hand but the temperature was at about 88* and we were in the woods raising the humidity slightly so if I had to guess, I'd say the LM4 was shooting at about 375-385. Ill try and confirm this, this upcoming weekend when I play again.

Magazines-
Another note on the magazines. Ensure you guys are checking your magazines immediately upon receiving them. Especially the two screws holding on the magazine feed lip. On one of my magazines the rear, longer screw was not threaded into the magazines. Upon closer inspection, I found that the actually hole was bored out too big and that the screw was perfectly fine. This is something I would have never caught if I didn't check my release valve. My local shop exchanged the magazine without a fuss most likely because I hadn't even taken the orange sticker off the bottom of the mag.

Full auto mag dump at end of day:



Next weekend I'll be playing a much larger game with some open fields where I will update this review. Any questions, comments, or requests please feel free to ask and I'll do my best to fulfill them. Thanks for reading.

Edited by dino325, 22 May 2012 - 08:25 PM.


#2 Outlaw1995

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Posted 17 May 2012 - 07:24 PM

Nice write up dude! I enjoyed reading it.

#3 Nitemare

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Posted 17 May 2012 - 07:32 PM

Very excited to get mine tomorrow!

#4 Jatodude

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Posted 17 May 2012 - 07:37 PM

Thank you for this thread.  It was fun to read, and I appreciate the pictures.

#5 BENboBEN

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Posted 17 May 2012 - 07:38 PM

 Nitemare, on 17 May 2012 - 07:32 PM, said:

Very excited to get mine tomorrow!
Same here bro! UPS guy can't come soon enough.

#6 Jatodude

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Posted 17 May 2012 - 07:40 PM

Mine gets here tomorrow too.  There will be a flood of LM4's online lol.

There seems to be something wrong with the pictures.  They aren't working right when I look at them on image shack.

Edited by Jatodude, 17 May 2012 - 07:50 PM.


#7 dino325

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Posted 17 May 2012 - 09:25 PM

Pictures fixed. That's my pup Vita staring me down in one of the pictures ;-)..

#8 Darth Genesis

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Posted 18 May 2012 - 03:32 AM

Thanks man. Now u have officially made this the longest week of my life. Mine will be here next Wed. Are u planing any upgrades or mods to it?

#9 dino325

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Posted 18 May 2012 - 08:07 AM

 Darth Genesis, on 18 May 2012 - 03:32 AM, said:

Thanks man. Now u have officially made this the longest week of my life. Mine will be here next Wed. Are u planing any upgrades or mods to it?

Glad you guys enjoyed it. Upgrades include a MOE handguard, afg2, and magpul popup front sight which is in the mail. Later down the road I'd like to aquire a seperate upper receiver and build a Mk18 upper. Looking into a NPAS as well after spending some time in chat yesterday ;-)

#10 akiraspeedstar

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Posted 18 May 2012 - 08:46 AM

Hey you're from Hawaii too, that for some reason makes me more sick that you have the gun haha. Nice write up, definitely got me more excited for the Magpul edition.

#11 Epitaph

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Posted 18 May 2012 - 02:18 PM

Just got to mess with an LM4 today, very impressive!

I noticed the hammer has some slack to it, similar to a WA/WOC, refer to the 5th picture in this thread. Does anyone know the reason behind this?

#12 dino325

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Posted 18 May 2012 - 04:23 PM

 Epitaph, on 18 May 2012 - 02:18 PM, said:

Just got to mess with an LM4 today, very impressive!

I noticed the hammer has some slack to it, similar to a WA/WOC, refer to the 5th picture in this thread. Does anyone know the reason behind this?

Hey bud, if your referring to how the hammer is sitting in that picture, its because it's de-cocked. Did it so you could see down into the receiver a bit better. Otherwise are you talking about the play when its locked down and cocked?

#13 Epitaph

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Posted 18 May 2012 - 04:31 PM

No, I am talking about when the trigger is pulled and the hammer is released just as your picture shows. There is play in the hammer, it can be pushed all the way up 90 degrees but when you release it, it will drop back to the state your picture shows. In a real AR, a KJW or even a WE the hammer will stay at the 90 degree angle after the trigger has been pulled. Just curious why this is, not trying to bad mouth the LM4 at all, as I stated before I am very impressed with the rifle so far and can't wait to buy my own.

#14 dino325

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Posted 18 May 2012 - 06:25 PM

 Epitaph, on 18 May 2012 - 04:31 PM, said:

No, I am talking about when the trigger is pulled and the hammer is released just as your picture shows. There is play in the hammer, it can be pushed all the way up 90 degrees but when you release it, it will drop back to the state your picture shows. In a real AR, a KJW or even a WE the hammer will stay at the 90 degree angle after the trigger has been pulled. Just curious why this is, not trying to bad mouth the LM4 at all, as I stated before I am very impressed with the rifle so far and can't wait to buy my own.

Ah roger, just was looking for clarification. Good questions though and one which might be better suited for a KWA rep..

#15 dino325

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Posted 20 May 2012 - 01:04 PM

Played a few games today. Review coming. For now though, https://www.youtube....be_gdata_player

#16 apacifico3

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Posted 20 May 2012 - 01:14 PM

Video is private... :/

#17 dino325

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Posted 20 May 2012 - 01:50 PM

Fixed. Sorry about that

#18 dino325

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Posted 22 May 2012 - 08:22 PM

Updated

#19 kullwarrior

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Posted 23 May 2012 - 06:11 AM

 Epitaph, on 18 May 2012 - 04:31 PM, said:

No, I am talking about when the trigger is pulled and the hammer is released just as your picture shows. There is play in the hammer, it can be pushed all the way up 90 degrees but when you release it, it will drop back to the state your picture shows. In a real AR, a KJW or even a WE the hammer will stay at the 90 degree angle after the trigger has been pulled. Just curious why this is, not trying to bad mouth the LM4 at all, as I stated before I am very impressed with the rifle so far and can't wait to buy my own.
The the same for KJW

My guess is, keep the hammer spring tension as minimal as possible. As soon as the valve lock engages hammer at 90 degrees is not needed. This is also found in their P226 which a lot of people didn't like either.

#20 Guest_Allizard_*

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Posted 23 May 2012 - 07:07 AM

The point is... we are trying NOT to like a real AR with the hammer stopped at 90 degrees.  Why?  Just to prevent ATF to say anything so they can pass the examination.





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