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Kwa Lm4 Series - 3Rd Party Compatibility List


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#1 Guest_Radix_*

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Posted 17 May 2012 - 06:50 AM

This is the official 3rd party compatibility list. Only 100% compatible (drop in) parts will be listed here. There will be 2 ratings for each of the parts, "KWA TESTED" or "USER TESTED".

"KWA TESTED" ratings are for parts sent to us by their manufacture for testing and verification. If we find the submitted parts to be 100% compatible with our products we will list them as "KWA TESTED". Please keep in mind, "KWA TESTED" rating is not an official endorsement of the manufacture or the part(s) or a guarantee of it's performance.

"USER TESTED" ratings are based on user's own experience and has not been officially verified. If at anytime the product is proofed to be non-compatible with KWA products, the listing will be promptly removed.

Feel free to post in this thread or PM any of the Forum Moderators to be added to the list.

#2 R_King91303

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Posted 17 May 2012 - 10:17 AM

User Tested: NcSTAR AR-15 Hand Guard Rail.

No modding required, fits perfectly.


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#3 Outlaw1995

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Posted 17 May 2012 - 12:00 PM

User Tested:
RS Troy Industries Drop in Battle Rail for CAR15/M4 - very tight, and hard to put in, but it is possible!! Very sturdy.
Magpul MOE Stock
Magpul UBR Stock
Magpul MOE Handguard
RS Magpul CTR Stock

Edited by Outlaw1995, 19 May 2012 - 05:32 PM.


#4 R_King91303

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Posted 17 May 2012 - 01:57 PM

Magpul PTS or Magpul USA?


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#5 wurger

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Posted 17 May 2012 - 06:08 PM

Magpul PTS is airsoft.

#6 aaps59

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Posted 17 May 2012 - 06:31 PM

View Postwurger, on 17 May 2012 - 06:08 PM, said:

Magpul PTS is airsoft.
Yes but both are compatible with airsoft guns. Magpul PTS parts are compatible with firearms as well but I definitely would not recommend using them on one. You'd most likely injure yourself heh.

#7 Nitemare

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Posted 18 May 2012 - 12:28 PM

My clone Magpul CTR fits, but does not lock into the first position (is this normal?) It's also slightly more wobbly than the OEM stock (which hardly wobbled at all surprisingly).

#8 dino325

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Posted 18 May 2012 - 04:26 PM

User tested:

Command Arms stock
Knight's Armament M4 carbine RAS system

Edited by dino325, 18 May 2012 - 09:13 PM.


#9 Raptor72

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Posted 21 May 2012 - 10:31 AM

User tested:

MOE Milspec hand guard, pistol grip and stock all fit perfectly.

Edited by Raptor72, 21 May 2012 - 10:31 AM.


#10 Guest_Allizard_*

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Posted 21 May 2012 - 04:58 PM

KWA Tested.

Tang Down Battle Grip 16
Posted Image

Posted Image

#11 Orange

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Posted 21 May 2012 - 11:53 PM

User Tested:

Magpul USA MOE Grip (Read the notes below)
  • It was a tight fit and as you can see in the image below it still left a slight gap on the top that might bother some people. That said, it doesn't wobble at all and is very sturdy.
  • The grip came with a different sized screw compared to the LM4 one (the LM4 uses a thinner screw that's metric-based as opposed to the new screw which I believe is imperial units).
  • The second picture shows how the holes in the grip were made for a larger screw. To avoid the risk of tightening the original screw right through the hole I used a #10 washer from Home Depot and it works perfectly.
I hope the fact that you need a washer doesn't void its compatibility in this thread =\.


Posted Image
Posted Image

#12 Paullouisj

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Posted 22 May 2012 - 09:06 PM

UTG Slim Carbine Rail fit
ERGO Grip Fit but no go on Gapper it would not fit even after sanding it down.
MOE Grip fit but didnt use waher  great idea.
MOE Stock fit

#13 apacifico3

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Posted 24 May 2012 - 09:49 AM

Any reason as to why the Magpul USA MOE grip isn't fitting properly? Is the tail of the grip the problem? I'd rather not have that gap when I get mine...

#14 Nitemare

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Posted 24 May 2012 - 03:34 PM

View Postapacifico3, on 24 May 2012 - 09:49 AM, said:

Any reason as to why the Magpul USA MOE grip isn't fitting properly? Is the tail of the grip the problem? I'd rather not have that gap when I get mine...

Orange used a washer in between the grip screw hole and the screw itself because the hole is almost the same size as the screw head. You wouldn't want to tighten right through the hole or have it break off with pressure, would you? If you don't want the gap, get a screw of the same size but with a larger head.

#15 apacifico3

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Posted 24 May 2012 - 06:12 PM

View PostNitemare, on 24 May 2012 - 03:34 PM, said:


Orange used a washer in between the grip screw hole and the screw itself because the hole is almost the same size as the screw head. You wouldn't want to tighten right through the hole or have it break off with pressure, would you? If you don't want the gap, get a screw of the same size but with a larger head.
I meant the gap between the receiver and the grip, not the screw head size difference or the use of the washer (which I'm perfectly fine with). Sorry if I caused confusion.

#16 Orange

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Posted 24 May 2012 - 09:18 PM

View Postapacifico3, on 24 May 2012 - 06:12 PM, said:

I meant the gap between the receiver and the grip, not the screw head size difference or the use of the washer (which I'm perfectly fine with). Sorry if I caused confusion.

I just took off the grip again to see if I can answer your question. It seems like the part of the beaver tail is causing the problem:

Posted Image

There's a light mark (the macro lens exaggerates it a bit), so it seems like it's pushing up against the lower receiver. The difference is probably about 1 millimeter or less.

For what it's worth, here's a gap size comparison between the stock grip and the MOE grip:

Posted Image
Posted Image

The shadows make it difficult to tell for sure, but there is a difference. It's not much of a problem for me but it might be an issue for you. Hope that helps!

#17 akiraspeedstar

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Posted 24 May 2012 - 11:32 PM

If it's that much of a concern, nothing that a split second of sanding won't solve.

#18 drat77

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Posted 25 May 2012 - 05:08 AM

Was the UBR the PTS GBBR version, or the USA version?

Thanks


View PostOutlaw1995, on 17 May 2012 - 12:00 PM, said:

User Tested:
RS Troy Industries Drop in Battle Rail for CAR15/M4 - very tight, and hard to put in, but it is possible!! Very sturdy.
Magpul MOE Stock
Magpul UBR Stock
Magpul MOE Handguard
RS Magpul CTR Stock


#19 Outlaw1995

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Posted 25 May 2012 - 11:38 AM

View Postdrat77, on 25 May 2012 - 05:08 AM, said:

Was the UBR the PTS GBBR version, or the USA version? Thanks
It is the PTS version.

#20 LittleBird

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Posted 26 May 2012 - 04:44 PM

My LM4 is on the way, should be here within the week, but I have all real steel Magpul parts for it along with a badbul omega R.I.S.  So as soon as everything arrives, I will post some pictures.




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