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Inner barrel for cqr mod1?


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#1 NoobAtAirsoft

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Posted 29 May 2014 - 04:38 PM

So i recently went and got myself a mod1 without thinking what i was doing and i really want a mk18 build. I know i should have gotten the mod2 but anyways, i need a new inner barrel 285mm or shorter (that would fit a kwa cqr mod 1). Also, you if you could recommend any other upgrades please do. I already know what flashhider,outer barrel, and rails im going to get . Thanks

#2 StealthTaskForce

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Posted 29 May 2014 - 07:16 PM

If you want, what I'm going to do to my CQR Mod 2, is extend the inner barrel by going through the suppressor all the way to the end of it. So if you want to you could extend it, which I would recommend doing in terms of accuracy and range. But even if you don't, adding a 6.03 barrel will help with accuracy and range. Madbull I've heard makes a good 6.03. Also, do you have deans connectors or Tamiya's? Because switching to deans will help with battery life conservation, while also lessening the loss of energy thereby increasing the amount if playing time you get on one charge. Lipos are also a good investment, though I can't suggest brand as I haven't done much research on them, but it does make your gun shoot faster if you want higher rate of fire lol


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#3 Desert Punk

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Posted 29 May 2014 - 08:47 PM

You could just cut the inner barrel down to what you want. And a G&G green bucking.

#4 tales

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Posted 30 May 2014 - 01:18 PM

View PostNoobAtAirsoft, on 29 May 2014 - 04:38 PM, said:

So i recently went and got myself a mod1 without thinking what i was doing and i really want a mk18 build. I know i should have gotten the mod2 but anyways, i need a new inner barrel 285mm or shorter (that would fit a kwa cqr mod 1). Also, you if you could recommend any other upgrades please do. I already know what flashhider,outer barrel, and rails im going to get . Thanks

Another vote for reusing your barrel. Its a good Barrel and Brass. Do more research about batteries and higher ROF, if you go that route.

What rail system are you going with? the COR has a front wired gear box. Is the battery going to fit, or are you rewiring the gear box to the rear?

#5 NoobAtAirsoft

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Posted 31 May 2014 - 03:44 PM

Im getting madbull 9 inch mk18 rails

Edited by NoobAtAirsoft, 31 May 2014 - 03:51 PM.


#6 NoobAtAirsoft

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Posted 31 May 2014 - 03:49 PM

My cqr is wired to the front and its wired to small Tamiya. Would this be a good barrel? http://www.evike.com/products/28897/ . I think my flash hider will cover the extra 2 cm.

#7 tales

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Posted 31 May 2014 - 05:31 PM

Isnt that rail bolted together?
Are you sure you can fit a battery in that RIS

Most RIS guns are rear wired
Not much room in there

#8 tales

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Posted 31 May 2014 - 06:19 PM

My sons MOD2 had to be rewired as the battery wouldn't fit in the rail
Posted Image

His SR7 Same thing came rear wired as a battery won't fit in a floating rail.
Posted Image

He has a ST6 also rear wired.
If the rail system you're going to use fits a battery, can you post a link.
IMO, it might make the front a little heavy for CQB but I'm interested in seeing it!

Both guns use 6.02 steel barrels, i find Madbull barrels bend too easy. JMO. i have tried them.

Edited by tales, 31 May 2014 - 06:21 PM.


#9 tales

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Posted 31 May 2014 - 06:29 PM

As for other upgrades the magpul MOE PTS pistol grip is a little larger and vented, it a good upgrade. on both above.

#10 NoobAtAirsoft

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Posted 02 June 2014 - 03:12 PM

link is here http://www.evike.com/products/37050/

#11 NoobAtAirsoft

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Posted 02 June 2014 - 03:13 PM

and im getting a PEQ box which i know will fit my battery

#12 tales

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Posted 02 June 2014 - 06:26 PM

Thats a free floating ris may need more work to install. PEQ box on a MOD1 thats different. Gonna be one expensive entry level gun.
I think you should have opted for the KWA commando. JMO, post pics when its done sounds interesting. Enjoy :)
https://www.youtube....h?v=3m41vzbyfzI

Edited by tales, 03 June 2014 - 04:26 AM.


#13 choochoo

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Posted 03 June 2014 - 09:41 AM

I dont think you'll have any compatibility issues with madbull rails and the kwa receiver.  So the installation should be fairly straightforward.  Also, the mod1 outer barrel is two piece.  If you take off the front portion,  you should be left with appprox 9".  So, that Madbull DD rail will cover your entire outer barrel.  You'll need a low profile gas block if you want to use the fake gas tube, which in my opinion, retains the realistic look.  You won't be able to use your front triangle sight post unless you chop it down.
the 300mm inner barrel might stick out a little bit, but if you're going to use a fake suppressor/barrel extension thingy, you'll be fine.

#14 tales

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Posted 03 June 2014 - 01:43 PM

The Madbull RIS is 3" longer then the stock hand guard. He has to remove the front sight & forearm retainer ring.
Hopefully no need for a receiver vice block, as the delta ring is now useless and has to be removed.
Might need a barrel nut wrench for that.

Along with the costly parts list for a plastic receiver AEG. its a great backup gun. IMO, i would buy a SR series 7 or 10 save money & have two guns.

Good Luck!

#15 choochoo

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Posted 03 June 2014 - 02:29 PM

I agree with you, but it's after the fact.  He's already bought a MOD1.  He could sell it....

Here's a install video for the Madbull DD MK18 rail.  It's for an Echo 1 M4, but it should all be the same


#16 StealthTaskForce

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Posted 03 June 2014 - 03:08 PM

Would all of these mods work the same for the Mod 2 as well? I don't know how much different they are other than barrel length, but I want to eventually get rid of the front sight post and put on a full RIS

#17 tales

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Posted 03 June 2014 - 03:57 PM

View Postchoochoo, on 03 June 2014 - 02:29 PM, said:

I agree with you, but it's after the fact.  He's already bought a MOD1.  He could sell it....

Here's a install video for the Madbull DD MK18 rail.  It's for an Echo 1 M4, but it should all be the same


True, its still a $180 gun. installing a $120 floating RIS, Battery PEQ box inner & outer barrel loosing a $40 sight
I guess it can be sold.
And as in the video there is a good chance he needs an AR wrench. The DD nut has to be tightened. another $20

I did it because my son didn't like the battery in the grip. 7075 RIS was $18. It had the .5 cylinder that needs attention Now KWA uses a type1 cylinder i think. Along with the lower plastic receiver has been known to crack, mine did thats another $45+ for the metal receiver.

You're 100% correct its his gun, And he should have fun doing it :)

KWAs M4 RIS on a MOD2 he didn't like it
Posted Image

FWIW, the ST6 Echo1 is a great gun. Another one of his MK18s
Posted Image

#18 tales

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Posted 03 June 2014 - 04:01 PM

View PostStealthTaskForce, on 03 June 2014 - 03:08 PM, said:

Would all of these mods work the same for the Mod 2 as well? I don't know how much different they are other than barrel length, but I want to eventually get rid of the front sight post and put on a full RIS

Yes they should. Keep in mind if you don't rewire the gun to the rear you will need a PEQ battery box, and Battery's that fit in it.

#19 NoobAtAirsoft

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Posted 03 June 2014 - 04:20 PM

View Postchoochoo, on 03 June 2014 - 09:41 AM, said:

I dont think you'll have any compatibility issues with madbull rails and the kwa receiver.  So the installation should be fairly straightforward.  Also, the mod1 outer barrel is two piece.  If you take off the front portion,  you should be left with appprox 9".  So, that Madbull DD rail will cover your entire outer barrel.  You'll need a low profile gas block if you want to use the fake gas tube, which in my opinion, retains the realistic look.  You won't be able to use your front triangle sight post unless you chop it down.
the 300mm inner barrel might stick out a little bit, but if you're going to use a fake suppressor/barrel extension thingy, you'll be fine.
i found a better barrel thats 286mm by prometheus  which im guessing is better and could i put on a flash hider on to the second part of the outer barrel? thanks

285mm*

#20 NoobAtAirsoft

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Posted 03 June 2014 - 04:23 PM

View Posttales, on 03 June 2014 - 01:43 PM, said:

The Madbull RIS is 3" longer then the stock hand guard. He has to remove the front sight & forearm retainer ring.
Hopefully no need for a receiver vice block, as the delta ring is now useless and has to be removed.
Might need a barrel nut wrench for that.

Along with the costly parts list for a plastic receiver AEG. its a great backup gun. IMO, i would buy a SR series 7 or 10 save money & have two guns.

Good Luck!
ya i know im putting alot of money into this gun because its my project gun. I want to learn more about airsoft internals and externals before i go buy my 400$ dream gun and screw up the internals. I would have gotten the sr7 but i was very low on money and i had to get t before an event thats coming up this weekend.




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