KWA M4A1 S-System In-Depth review
 

REVIEW UPDATED REGULARLY

ROF Tests(All batteries fully charged):

Real Steel: 13 rounds per second, 800rounds per minute.

http://img169.imageshack.us/img169/6...ni15rpsdq2.png
Sanyo 8.4v 600mah Nicd Mini Battery - 15 rounds per second - 900rds/min

http://img144.imageshack.us/img144/2...mh19rpskc2.png
Firefox 9.6v 2000mah Nimh Crane Stock Battery - 19 rounds per second - 1140rds/min

http://img135.imageshack.us/img135/5...imh196rsm0.png
G&P 9.6v 3300mah Nimh Large Battery - 19.6 rounds per second - 1176rds/min

http://img144.imageshack.us/img144/1...o419rpsth4.png
Morepower LiFEPo4 12.8v 1600mah Battery - 19 rounds per second - 1140rds/min

http://img169.imageshack.us/img169/4...po25rpskj5.png
Firefox 11.1v 1600mah Lipo battery - 25rounds per second - 1500rds/min

So I finally decided to do a review of the KWA M4A1- S-System after gaming it a total of 6 games.

I've read a couple of other KWA review but they weren't very in-depth and have not used Lipo battery like this SHOULD be used with.

-Hop up unit is NOT TM compatible(i will explain in detail later)
-The inside of the hop up rubber that pushes onto the BB is H-shaped unlike others
-inner barrel is 395mm, not 363
-The sector gear has a sector clip installed to eliminate any BB misfeeding. Even at 30BBs per second.
-Uses 2 piece hop up, there is a reason why they didn't use 1 piece(explain more later)
-Fuse is rated too low for lipo. its rated for only 15A, i reccomend replacing the fuse with 20A or even 25A fuses.
-Many improvements inside the gearbox to make the tuner's life much easier(explain in detail later)



KWA M4A1 on 11.1v Lipo(12C)
The video is NOT to show the accuracy, but showing the rate of fire.
- The grouping is very big because it was VERY hard to control the recoil at 25 of them per second...
- The gun is upgraded, it does not reflect the accuracy of the stock KWA gun.
- The shots are lower than the targer because the Scope was not zeroed.

Seeing as how I'm seriously considering the KWA S-system I'll be looking forward to this review.

any more interests?

count me in, I've been wanting to get this for a while. Basically you're paying $50 more for the RIS right?

I'd be interested, for something to read!

count me in too

Just received mine yesterday A freakin Day early sweet.It looks as awsome as i thought, weight is Very nice and with the new King Arms Tromix Shark Muzzle Brake Flashider it is definatly a kick ass lookin gun The LiPO isnt here yet but terry has one that i will probably test it out tonight ill let ya know how that goes.The Trades on the gun are very nicely done Stickers were a pain in the arse to get off the stock flashider was bright orange and apperantly the colour is somehow infused with the steel so stripin it is outa the question supposed to use sandpaper and paint over it......me i just replaced it...LOL. The Sound of this monster is just that a Monstorous with a 8.4 mini cant wait to hear it on a LiPO

So ya im interested in your review as well

Hey ! I don't want to pollute this review, but just want to save people from KWA. I bought an KWA KM4A1 about a month ago and I used 11.1 v Lipo for all the time, It's quite pretty good with Semi but with Auto, never and never use 11.1 v Lipo with Full Auto, It will riped out your gear inside the mechbox, it would be good if you use Lipo under than 11.1 v. It's just advice to my experience with KWA.

ya it was clearly a lemon, that one doesnt reflect the WHOLE batch. So dont go around saying "Save people from KWA". It's doesnt really sound right when you say "Don't buy a KWA M4, I got one and mine was a lemon, so it didnt work right. If you get one its going to be a lemon too! Even though the lemon rate is like 0.001%!!".

But I actually do feel sorry for you, You must have a Godsend-Luck to get a lemon LOL

in any case Ill have a video posted up soon(shooting with lipo).

review should be done by tomorrow night with full pics.

cant wait to read the review.

video is up

KWA M4A1 on 11.1v Lipo(12C)

The video is NOT to show the accuracy, but showing the rate of fire.
- The grouping is very big because it was VERY hard to control the recoil at 25 of them per second...
- The gun is upgraded, it does not reflect the accuracy of the stock KWA gun.
- The shots are lower than the targer because the Scope was not zeroed.

Can't seem to get the link to work - although several friends are able to watch the vid without issue.

Any chance you might do a writeup Sklad?

ya im doing the write up right now, i got an unexpected shift for tonight for work so I can't finish up the write up till tomorrow

btw the video only shows the rate of fire =\

Count me in too. Very interested on your review Skladfin

nice video, you must have bbs everywhere in your house!

edited.

Whoa you could go through a Star 30-rounder in one burst! Nice gun :D

just opened up the gearbox and is taking some pictures

been busy in the past few days, ill get this done.... and post some pics

Pretty high ROF.

But why do you say hard to control the recoil? AEG's don't have any.

if you actually fire 25 rounds a second, you'll see what I mean

that must sound like an aeg farting

25farts per second, thats pretty hardcore

In all seriousness did it sound like a zipper or fabric ripping? I've noticed that the really high ROF real steel weapons seem to sound like that, at least the ones I've heard (CIWS).

I would like to see the review, im planning on buying one soon! I wanna see if its worth it


thanks!

its worth it trust me just make sure to change the hopup

i was playing around with it for like 20 hours.

disassembled this gun probably up to 15 times already.

the 2 piece hop up unit is NOT TM compatible. So the TM hop up unit WILL NOT work. The reason being that the stock airseal nozzle has a slot on top of it to give it smoother movement, and the stock KWA hop up unit also has a hollowed out slot for it to move through.

but the TM hop up unit doesnt, so you won't be able to shoot any BBs at all without changing the airseal nozzle.

This can only mean one thing..... You need to fire more RS.. ;)

And that KWA looks terribly awesome. How's the metal? Is it shitty KWA pot metal?

It should be noted that the gearbox uses 8mm (x4) and 9mm(x2) bearings and they are damn near impossible to find.

Well the 8mm are fairly easy but ya good luck finding 9's

TOO Late! I just bought one :)

Yea I got one of these things too. I'm no expert, but lets say if this gun screws up. What other mecboxes will I be able to use with the same recievers? Also what hop-up chamber can I get for it? I can't hink of any other brand that makes a 2 piece hop up chamber.

Also would like to know how easy/hard would it be to switch to a battery cranestock/modstock assuming one isn't going li/po with it.

I WILL SAY THIS AGAIN

THE HOP UP UNIT IS NOTNOTNOTNOTNOTNOTNOTNOTNOTNOTNOTNOTNOTNOTNOT TM COMPATIBLE

If you guys need spare parts for the KWAs, just contact the warstore.
They sell alot of them and even if they don't have the part in stock, they can get it quickly in the u.s. and ship it here cheap.

Warstore=No KWA parts

and yes my bad about the hopup change nothing is compatible and it will have to be modded to work

Okay i went and bought the 7mm rubber O-rings you mentioned in your PM now what do i do with em?

ill post out the mod around monday.

im not home and cant upload pictures.

ill try my best to use words to describe it...

shave the O-ring really thin... almost 1mm thin.

take your hop up unit and disassemble only the bottom and centre gear.

now put back your centre gear first, but between the centre gear and the hop up unit, put in the O-ring you just shaved.

now screw back the bottom gear. try to make it screw on somewhat tight, too tight will make it impossible to adjust the hop up.

what this mod does is, it creates friction between the hop up unit and centre gear so that it won't back down.