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Review : Jing Gong M4 S-System /56k

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Old April 26th, 2010, 20:36   #1
Boyso
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Review : Jing Gong M4 S-System /56k

Aaah, my first airsoft gun!

I bought this gun from Frank at VelocityArms.ca (TorontoAirsoft.ca)









It came with the normal stuff, a 8.4V 1100 mAH battery (Odd Double-shaped), a wall charger, unjamming rod, crappy BBs, HiCap and the manual. And the clear (dark smoke) lower receiver.

I eventually painted it black with Krylon paint.


(Sorry for the blurry pictures)


(Now, it's black, but no more trademarks )


Externals
Externally, the gun is fine. The lower receiver is made from really thick plastic and is really nice to the touch. It won't break soon. Upper receiver, is quite the opposite. Really weak, may break easily. The SIR is fine, normal pot metal like pretty much any clone. I've experienced no barrel wobble, at all. Battery compartment is a bitch. Really, really hard to fit in the stock battery, I had to make room with a dremel.


(Note : Tape on battery so we can't see the yellow through the lower part. Also look at the shaved off plastic for more room!)

One thing to remember, M4 S-System uses a different upper receiver than normal armalites. The Delta ring is a dummy one, it is not threaded into the receiver. May make it harder to do a FMU.

Collapsible Stock is fine, does wobble on the buffer tube, but it's a quick fix with some tape.

Internals
First, I'm no airsoft expert. I'm new to all this, but I did my best to learn the art of playing with mechboxes!

First of all, came with a black gearbox shell, with SB on it. Looks pretty much like any V2 gearbox.


(The fun part!)

Once it's opened, hmm, that's the bad part. First, grease everywhere. Looks (and smell) really bad. Shimming job is disgusting, all gears were touching, and no grease at all on them!

Once cleaned-up and reshimmed


(Note : I have a Modify bearing spring guide that I added. It is not the stock one!)

Came with that orange Piston, seems decent quality, Metal Spring guide, and everything else in the bottom picture. I also added some Modify part next to it as a comparison.


(Note : The MASK piston head gave me alot of trouble. But it's now back on the Modify piston.)


(Above Spring is the Modify S90. One below is the stock Spring (chrono'd at 392 with .2s))


(Golden Eagle motor, hmm?)


(That Anti-Reversal latch is nearly impossible to put in the gearbox. It loves to jump out of his spot when you are struggling with the spring and trying to shut the other halve of the gearbox.)

My conclusions
As I'm no airsoft expert, I can't give this airsoft a rating.

What I can say is :

-This gun looks good, feels good, and shoots good (Until I messed it up!)
-This gun is too hot for indoor play
-It's a clone. Be ready to struggle with upgrades.

Final words, it's a good starter gun, but I wish I'd bought a better gun off the classifieds.

Hope you liked, sorry if my english isn't perfect. If anything I've said is wrong, Pm me!

Thanks to anyone who helped me in my Doctor's corner threads (Amos, m102404 and others), and you, Tiny Tim! :lol:
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Last edited by Boyso; April 26th, 2010 at 22:50..
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Old April 26th, 2010, 20:56   #2
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PPPFFFF wonderful gun. Love it! Might want to do the Fuse mod so you don't struggle with the battery. Just take the handguard off and put the fuse above the barrel....if you have a spare peice of tubing, put it through that and you can have an imitation gas tube.
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If you were trying to insert a magazine into another magazine then I guess that would be indeed ghey. Inserting a magazine in a magwell seems rather hetero to me. The tape is merely metro, calling it ghey is rather absurd and makes it hard for the metro magazines to socialize with other magazines.
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Old April 26th, 2010, 20:58   #3
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Yes, I did the battery mod, but decided to leave the fuse box underneath the barrel.

Now it fits, but before the dremel, I literaly had to fight with it for a good 15 minutes until all the wires were in the good spot and nothing was squeezed.

For the gaz tube, I still have it, just forgot to put it :P (Can be seen in the first pics)
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Old April 26th, 2010, 21:28   #4
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Will be interesting to find out when mine dies. I have had the JG S-System since March 2009 and have not greased, oiled, cleaned, talked dirty to it since.

God I love clones..they're like ugly girls........they don't care if you treat them like shit as long as you play with them every now and then.
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If you were trying to insert a magazine into another magazine then I guess that would be indeed ghey. Inserting a magazine in a magwell seems rather hetero to me. The tape is merely metro, calling it ghey is rather absurd and makes it hard for the metro magazines to socialize with other magazines.
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Old April 26th, 2010, 21:28   #5
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not bad, what did it cost you?
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Old April 26th, 2010, 21:30   #6
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Mine was just under $400 from VA. Mine came with the Panther Arms lower though.
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If you were trying to insert a magazine into another magazine then I guess that would be indeed ghey. Inserting a magazine in a magwell seems rather hetero to me. The tape is merely metro, calling it ghey is rather absurd and makes it hard for the metro magazines to socialize with other magazines.
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Old April 26th, 2010, 21:45   #7
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289$ + 120ish of upgrades.

EDIT : And sigged you, LoveMyStubby :P
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CAN KISS MY ASS"
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Last edited by Boyso; April 26th, 2010 at 22:42..
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Old April 26th, 2010, 22:05   #8
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What's that rail system called and who manufactures it? I tried to google it, but all I found were links to the JG M4, so did JG design it?
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Old April 26th, 2010, 22:40   #9
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It's called a SIR

I know DBoys makes one.

http://www.ebairsoft.com/dboys-3381-forend-p-1051.html
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Old April 26th, 2010, 22:48   #10
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S.I.R. handguard (Selective Integration Rail) manufactured by ARMS Inc
http://www.armsmounts.com/default.asp?mode=sir

You're looking at anywhere from $300USD - $500USD if you want a REAL one!!! Woooot?


Here is a pic of a US soldier with one. Poster suggests it is a private purchase from ARMS inc.
Attached Images
File Type: jpg SIR US.jpg (65.9 KB, 38 views)
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Originally Posted by BennyBoy View Post
If you were trying to insert a magazine into another magazine then I guess that would be indeed ghey. Inserting a magazine in a magwell seems rather hetero to me. The tape is merely metro, calling it ghey is rather absurd and makes it hard for the metro magazines to socialize with other magazines.

Last edited by The Chad; April 26th, 2010 at 23:06..
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Old April 26th, 2010, 23:03   #11
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Quote:
Originally Posted by LoveMyStubby View Post
S.I.R. handguard (Selective Integration Rail) manufactured by ARMS Inc
Yes, that is the answer I was looking for. I know what it is, I just wanted to know who is the manufacturer of it. Are you sure it's ARMS? They look a tad different.
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Old April 26th, 2010, 23:08   #12
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Quote:
Originally Posted by Stealthee View Post
Yes, that is the answer I was looking for. I know what it is, I just wanted to know who is the manufacturer of it. Are you sure it's ARMS? They look a tad different.
I don't think that anyone can make "Exact" replicas of it as the patents are "Pending." Don't look like even the US Military will touch them.

Check out their site, OMFG there are like 8-10 different variants.

So far, Blackwater is the only outfit that is proud to use them and promotes them.
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Originally Posted by BennyBoy View Post
If you were trying to insert a magazine into another magazine then I guess that would be indeed ghey. Inserting a magazine in a magwell seems rather hetero to me. The tape is merely metro, calling it ghey is rather absurd and makes it hard for the metro magazines to socialize with other magazines.
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Old April 26th, 2010, 23:11   #13
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I thought they were made in the '90s, but never met the US Army specs.
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Old April 26th, 2010, 23:14   #14
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No idea, the site still says "Patents pending."

Here is their current patents and trademarks:

http://www.armsmounts.com/default.as...=patent&sub=17



LMFAO @ the sig. There's #4!!!
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Quote:
Originally Posted by BennyBoy View Post
If you were trying to insert a magazine into another magazine then I guess that would be indeed ghey. Inserting a magazine in a magwell seems rather hetero to me. The tape is merely metro, calling it ghey is rather absurd and makes it hard for the metro magazines to socialize with other magazines.
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Old April 26th, 2010, 23:19   #15
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Quote:
Originally Posted by LastSpartan View Post
I thought they were made in the '90s, but never met the US Army specs.
Yeah, I read somewhere that they are pretty old, but I like it better than Knight's. Picatinny are cool too.
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